2.OA.1 – Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. (See Glossary, Table 1. http://www.corestandards.org/the-standards/mathematics/glossary/glossary/ )

• 14 learning outcomes – click to view

  Samples: Add multiples of 10. Add two-digit numbers using the split strategy. 

  • Add multiples of 10

    • Activities: 3 course, 4 extra

    • • Add multiples of 10
      • Tutorial
    • • Add multiples of 10
      • Practice
    • • Adding multiples of 10
      • Tutorial

    Extra activities

    • • Add multiples of 10
      • Printable
    • • Adding multiples of 10
      • Tutorial
    • • 
      • Addition problem solving
      • Assessment
    • • 
      • Adding lots of 10
      • Practice

  • Add two-digit numbers using the split strategy

    • Activities: 6 course, 2 extra

    • • Add two-digit numbers using the split strategy
      • Tutorial
    • • Add two-digit numbers using the split strategy
      • Practice
    • • Add two-digit numbers using the split strategy
      • Practice
    • • Add two-digit numbers using the split strategy
      • Printable
    • • Adding two digit numbers (split strategy)
      • Tutorial
    • • Adding two digit numbers (split strategy)
      • Tutorial

    Extra activities

    • • How to add using the split strategy
      • Tutorial
    • • Split strategy for addition
      • Practice

  • Add single-digit numbers to two-digit numbers

    • Activities: 3 course, 14 extra

    • • Add single-digit numbers to two-digit numbers
      • Tutorial
    • • Add single-digit numbers to two-digit numbers
      • Practice
    • • Adding on (numbers under 10)
      • Challenge

    Extra activities

    • • Add single-digit numbers to two-digit numbers
      • Printable
    • • Add single-digit numbers to two-digit numbers (problem solving)
      • Printable
    • • Adding on (numbers under 10)
      • Printable
    • • Add on numbers under 10
      • Tutorial
    • • Adding lots of 100 to numbers less than 1,000
      • Tutorial
    • • 
      • Adding lots of 100 to numbers less than 1,000
      • Assessment
    • • 
      • Add on numbers less than 10
      • Assessment
    • • 
      • Add numbers less than 10 to numbers less than 50
      • Challenge
    • • 
      • Adding lots of 10 to numbers less than 1,000
      • Challenge
    • • 
      • Add lots of 10 - Jump Strategy
      • Practice
    • • 
      • Adding lots of 10 to numbers less than 200
      • Assessment
    • • 
      • Adding lots of 10 to numbers less than 200
      • Challenge
    • • 
      • Adding lots of 10 to numbers less than 1,000
      • Assessment
    • • 
      • Adding lots of 100 to numbers less than 1,000
      • Challenge

  • Add two-digit numbers using the jump strategy

    • Activities: 6 course, 5 extra

    • • Add two-digit numbers using the jump strategy
      • Tutorial
    • • Add two-digit numbers using the jump strategy
      • Practice
    • • Add two-digit numbers using the jump strategy
      • Practice
    • • Add two-digit numbers using the jump strategy
      • Practice
    • • Adding two digit numbers (jump strategy)
      • Tutorial
    • • Adding two digit numbers (jump strategy)
      • Tutorial

    Extra activities

    • • Jump Strategy/Method Explained
      • Tutorial
    • • Jump Strategy/Method
      • Tutorial
    • • Mental strategies in addition - add on numbers up to 20
      • Tutorial
    • • 
      • Addition of two digit numbers
      • Challenge
    • • 
      • Addition of Two Digit Numbers
      • Assessment

  • Add two-digit numbers using the written strategy

    • Activities: 5 course, 11 extra

    • • Add two-digit numbers using the written strategy
      • Tutorial
    • • Add two-digit numbers using the written strategy
      • Practice
    • • Add two-digit numbers using the written strategy
      • Practice
    • • Adding two digit numbers (written strategy) no carrying
      • Tutorial
    • • Adding two digit numbers (written strategy) with carrying
      • Tutorial

    Extra activities

    • • Add two-digit numbers using the written strategy
      • Printable
    • • Add two-digit numbers using the written strategy
      • Printable
    • • Add two-digit numbers using the written strategy
      • Printable
    • • Adding two-digit numbers (written strategy)
      • Printable
    • • Adding two digit numbers (written strategy)
      • Printable
    • • Drill - Add on lots of 10 - written strategy
      • Printable
    • • 
      • Drill - Adding two digit numbers - written strategies (Auto-Generated)
      • Printable
    • • 
      • Addition of two digit numbers
      • Practice
    • • 
      • Addition of two digit numbers
      • Practice
    • • 
      • Addition of two digit numbers - without trading
      • Practice
    • • 
      • Addition of two digit numbers
      • Tutorial

  • Add two-digit numbers (problem solving)

    • Activities: 6 course, 12 extra

    • • Add two-digit numbers (problem solving)
      • Practice
    • • Add two-digit numbers (problem solving)
      • Practice
    • • Add two-digit numbers (problem solving)
      • Practice
    • • Add two-digit numbers (problem solving)
      • Practice
    • • Adding two digit numbers (problem solving)
      • Practice
    • • Adding two digit numbers (problem solving)
      • Practice

    Extra activities

    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Adding two digit numbers (problem solving) Answer sheet
      • Printable
    • • 
      • Problem solving using addition
      • Assessment
    • • Subtraction - two digit numbers
      • Printable
    • • 
      • Addition of two digit numbers
      • Assessment
    • • 
      • Addition using the Jump Strategy/Method
      • Challenge

  • Challenge Puzzle - Addition Pyramid

    • Activities: 1 course, 0 extra

    • • Challenge Puzzle - Addition Pyramid
      • Practice

  • Subtract 10 from numbers

    • Activities: 8 course, 12 extra

    • • Subtract 10 from numbers
      • Tutorial
    • • Subtract 10 from numbers
      • Practice
    • • Subtract 10 from numbers (problem solving)
      • Practice
    • • Subtract 10 from numbers (problem solving)
      • Printable
    • • Subtracting 10
      • Tutorial
    • • Subtracting 10
      • Challenge
    • • Subtracting 10
      • Tutorial
    • • Subtracting 10
      • Practice

    Extra activities

    • • Subtract 10 from numbers
      • Printable
    • • Subtract 10 from numbers (problem solving)
      • Printable
    • • Subtract 10 from numbers (problem solving)
      • Printable
    • • Subtract 10 from numbers under 100
      • Printable
    • • Drill - Subtract 10 from numbers under 50
      • Printable
    • • Subtract 10 from larger numbers
      • Printable
    • • Subtract 10 from numbers
      • Printable
    • • 
      • Subtract 10 from larger numbers
      • Assessment
    • • 
      • Mental strategies - subtract multiples of 10 from numbers up to 200
      • Challenge
    • • 
      • Subtract 10 from larger numbers
      • Challenge
    • • 
      • Subtract 10 from numbers
      • Assessment
    • • 
      • Mental strategies - subtract multiples of 10 from numbers up to 200
      • Assessment

  • Subtract multiples of 10 from numbers

    • Activities: 4 course, 7 extra

    • • Subtract multiples of 10 from numbers
      • Tutorial
    • • Subtract multiples of 10 from numbers
      • Practice
    • • Subtract multiples of 10 from numbers (problem solving)
      • Practice
    • • Subtracting multiples of 10
      • Tutorial

    Extra activities

    • • Subtract multiples of 10 from numbers
      • Printable
    • • Subtract multiples of 10 from numbers (problem solving)
      • Printable
    • • Subtract multiples of 10 from numbers (problem solving)
      • Printable
    • • Subtracting multiples of 10
      • Printable
    • • Subtract Multiples Of 10
      • Tutorial
    • • Mental strategies - subtract multiples of 10 from numbers up to 2000
      • Printable
    • • Drill - Subtract multiples of 10 from numbers under 1000
      • Printable

  • Subtract from 100 (problem solving)

    • Activities: 6 course, 7 extra

    • • Subtract from 100
      • Tutorial
    • • Subtract from 100
      • Practice
    • • Subtract from 100 (problem solving)
      • Practice
    • • Subtracting from 100
      • Challenge
    • • Subtracting from 100
      • Tutorial
    • • Subtracting from 100
      • Tutorial

    Extra activities

    • • Subtract from 100
      • Printable
    • • Subtract from 100 (problem solving)
      • Printable
    • • Subtract from 100 (problem solving)
      • Printable
    • • Subtracting from 100
      • Printable
    • • Subtract from 100 - Written Strategy
      • Tutorial
    • • 
      • Subtract from 100
      • Practice
    • • 
      • Subtract from 100
      • Assessment

  • Subtract two-digit numbers using the adding-on strategy

    • Activities: 5 course, 0 extra

    • • Subtract two-digit numbers using the adding-on strategy
      • Tutorial
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice

  • Subtract two-digit numbers using the jump-back strategy

    • Activities: 5 course, 16 extra

    • • Subtract two-digit numbers using the jump-back strategy
      • Tutorial
    • • Subtract two-digit numbers using the jump-back strategy
      • Practice
    • • Subtract two-digit numbers using the jump-back strategy
      • Practice
    • • Subtracting two digit numbers (jump back strategy)
      • Tutorial
    • • Subtract single digit numbers from numbers under 100
      • Practice

    Extra activities

    • • 
      • Drill - Subtract single digit numbers from numbers under 100 (Auto-Generated)
      • Printable
    • • Drill - Subtract single digit numbers from numbers under 100
      • Printable
    • • Subtract single digit numbers from numbers less than 100
      • Printable
    • • 
      • Subtracting numbers under 20 from numbers under 100
      • Challenge
    • • 
      • Subtracting numbers under 20 from numbers under 100
      • Assessment
    • • 
      • Subtract single digit numbers from numbers less than 100
      • Assessment
    • • Timed Challenge: Subtract single digit numbers
      • Challenge
    • • 
      • Mental Strategies - Subtraction of numbers under 50
      • Practice
    • • 
      • Subtract 20 from numbers under 100
      • Challenge
    • • 
      • Subtract 20 from numbers under 100
      • Assessment
    • • 
      • Subtract 30 from numbers under 100
      • Challenge
    • • 
      • Subtract 30 from numbers under 100
      • Assessment
    • • 
      • Subtract 40 from numbers under 100
      • Assessment
    • • 
      • Subtract 40 from numbers under 100
      • Challenge
    • • 
      • Subtract 50 from numbers under 100
      • Challenge
    • • 
      • Subtract 50 from numbers under 100
      • Assessment

  • Subtract two-digit numbers using a written strategy

    • Activities: 6 course, 13 extra

    • • Subtract two-digit numbers using a written strategy
      • Tutorial
    • • Subtract two-digit numbers using a written strategy
      • Practice
    • • Subtracting two digit numbers (written strategy)
      • Practice
    • • Subtracting two digit numbers (written strategy)
      • Tutorial
    • • Subtraction - two digit numbers - without trading
      • Tutorial
    • • Subtracting two digit numbers (written strategy)
      • Tutorial

    Extra activities

    • • Subtract two-digit numbers using a written strategy
      • Printable
    • • Subtract two-digit numbers using a written strategy
      • Printable
    • • Subtract two-digit numbers using a written strategy
      • Printable
    • • Subtracting two digit numbers (written strategy)
      • Printable
    • • Subtracting two digit numbers (written strategy)
      • Printable
    • • 
      • Subtracting two digit numbers (written strategy)
      • Tutorial
    • • Subtracting two digit numbers (written strategy)
      • Tutorial
    • • Subtraction of two digit numbers
      • Printable
    • • 
      • Drill - Subtract from 100 - written strategy (Auto-Generated)
      • Printable
    • • Drill - Subtract from 100 - written strategy
      • Printable
    • • 
      • Subtraction - two digit numbers - without trading
      • Practice
    • • 
      • Subtraction - two digit numbers - using blocks
      • Practice
    • • 
      • Subtraction - two digit numbers
      • Practice

  • Subtract two-digit numbers (problem solving)

    • Activities: 6 course, 22 extra

    • • Subtract two-digit numbers
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtracting two digit numbers (problem solving)
      • Practice

    Extra activities

    • • Subtract two-digit numbers
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtract numbers less than 20
      • Printable
    • • Subtracting numbers under 20 from numbers under 100
      • Printable
    • • 
      • Problem solving using addition and subtraction
      • Assessment
    • • Drill - Subtract lots of 10 from numbers under 200
      • Printable
    • • Drill - Subtract numbers up to 100
      • Printable
    • • 
      • Problem solving using subtraction
      • Assessment
    • • 
      • Problem solving using addition and subtraction
      • Assessment
    • • 
      • Subtraction
      • Assessment
    • • 
      • Drill - Subtract numbers up to 100 (Auto-Generated)
      • Printable
    • • 
      • Subtraction - two digit numbers
      • Challenge
    • • 
      • Subtraction of two digit numbers
      • Challenge
    • • 
      • Subtraction of two digit numbers
      • Assessment

2.OA.2 – Fluently add and subtract within 20 using mental strategies. (See standard 1.OA.6 for a list of mental strategies.) By end of Grade 2, know from memory all sums of two one-digit numbers.

• 4 learning outcomes – click to view

  Samples: Add single-digit numbers. Find the missing number in single-digit addition. Subtract single-digit numbers. 

  • Add single-digit numbers

    • Activities: 5 course, 17 extra

    • • Add single-digit numbers
      • Tutorial
    • • Add single-digit numbers
      • Practice
    • • Add single-digit numbers (20 questions)
      • Practice
    • • Adding single digit numbers
      • Challenge
    • • Add numbers less than 5
      • Tutorial

    Extra activities

    • • Add single-digit numbers
      • Printable
    • • Add doubles - single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Timed Challenge: Add numbers less than 5
      • Challenge
    • • 
      • Add Single Digits Duck Game
      • Practice
    • • Drill - Add numbers up to 10.
      • Printable
    • • Drill - Doubles to 20
      • Printable
    • • 
      • Drill - Add numbers up to 10 (Auto-Generated)
      • Printable
    • • 
      • Drill - Doubles to 20 (Auto-Generated)
      • Printable
    • • Add single digit numbers
      • Printable
    • • 
      • Add single digit numbers - visual cues
      • Practice
    • • 
      • Add single digit numbers using a number line
      • Practice
    • • 
      • Addition to 20 - with visual cues
      • Practice
    • • 
      • Add numbers less than 5
      • Assessment
    • • 
      • Add single digit numbers
      • Assessment
    • • 
      • Combining to 20
      • Practice

  • Find the missing number in single-digit addition

    • Activities: 3 course, 10 extra

    • • Find the missing number in single-digit addition
      • Tutorial
    • • Find the missing number in single-digit addition
      • Practice
    • • Single digit addition (missing number)
      • Challenge

    Extra activities

    • • Find the missing number in single-digit addition
      • Printable
    • • Find the missing number in single-digit addition (problem solving)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single Digit Addition with a Missing Number
      • Tutorial
    • • 
      • Drill - Single digit addition with a missing number (Auto-Generated)
      • Printable
    • • 
      • Addition with a missing number
      • Assessment
    • • Single digit addition with a missing number
      • Tutorial

  • Subtract single-digit numbers

    • Activities: 5 course, 12 extra

    • • Subtract single-digit numbers
      • Tutorial
    • • Subtract single-digit numbers
      • Tutorial
    • • Subtract single-digit numbers
      • Practice
    • • Subtract single-digit numbers
      • Practice
    • • Subtracting single digit numbers
      • Challenge

    Extra activities

    • • Subtract single digit numbers
      • Printable
    • • 
      • Subtraction problem solving
      • Assessment
    • • Subtract single digit numbers
      • Printable
    • • Drill - Subtraction under 10
      • Printable
    • • 
      • Drill - Subtraction under 10 (Auto-Generated)
      • Printable
    • • Subtract single digit numbers
      • Tutorial
    • • Subtract single digits
      • Tutorial
    • • 
      • Subtract from 10
      • Practice
    • • 
      • Subtract single digit numbers
      • Assessment
    • • 
      • Subtract single digit numbers
      • Challenge
    • • 
      • Subtract single digit numbers
      • Practice
    • • 
      • Subtract numbers less than 20
      • Assessment

  • Single-digit subtraction (missing number)

    • Activities: 3 course, 7 extra

    • • Single-digit subtraction (missing number)
      • Tutorial
    • • Single-digit subtraction (missing number)
      • Practice
    • • Single digit subtraction (missing number)
      • Challenge

    Extra activities

    • • Subtract single digits with a missing number
      • Tutorial
    • • Single-digit subtraction (missing number)
      • Printable
    • • Subtraction with a missing number - numbers under 20
      • Printable
    • • 
      • Drill - Subtraction with a missing number (Auto-Generated)
      • Printable
    • • Drill - Subtraction with a missing number
      • Printable
    • • Subtract single digits with a missing number
      • Printable
    • • 
      • Subtraction with a missing number - numbers under 20
      • Assessment

2.OA.3 – Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.

• 2 learning outcomes – click to view

  Samples: Odd and even amounts. Matching equations to word problems. 

  • Odd and even amounts

    • Activities: 1 course, 0 extra

    • • Odd and even amounts
      • Practice

  • Matching equations to word problems

    • Activities: 1 course, 0 extra

    • • Matching equations to word problems
      • Practice

2.OA.4 – Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

• 6 learning outcomes – click to view

  Samples: Count in groups of 2. Count by 2s using a number line. Count in groups of 5. Count by 5s using a number line. 

  • Count in groups of 2

    • Activities: 4 course, 7 extra

    • • Count in groups of 2
      • Tutorial
    • • Count in rows of 2
      • Practice
    • • Count in groups of 2
      • Practice
    • • Groups of 2
      • Tutorial

    Extra activities

    • • Count in groups of 2
      • Printable
    • • Count in groups of 2
      • Printable
    • • 
      • Practice
    • • 
      • Groups of 2
      • Practice
    • • 
      • Groups of 2
      • Challenge
    • • 
      • Groups of 2
      • Assessment
    • • 
      • Multiply by adding lots of 2
      • Practice

  • Count by 2s using a number line

    • Activities: 7 course, 5 extra

    • • Count by 2s using a number line
      • Tutorial
    • • Count by 2s
      • Practice
    • • Count by 2s using a number line
      • Practice
    • • Count by 2s using a number line
      • Practice
    • • Counting by 2
      • Tutorial
    • • Counting by 2
      • Tutorial
    • • Counting by Two - Faster
      • Tutorial

    Extra activities

    • • Count by 2s
      • Printable
    • • Counting by 2
      • Tutorial
    • • 
      • Counting by 2
      • Assessment
    • • 
      • Count on by 2 the next three numbers
      • Practice
    • • 
      • Count by lots of 2
      • Practice

  • Count by 5s

    • Activities: 5 course, 14 extra

    • • Count in groups of 5
      • Tutorial
    • • Count in rows of 5
      • Practice
    • • Count in groups of 5
      • Practice
    • • Groups of 5
      • Tutorial
    • • Rows of 5
      • Tutorial

    Extra activities

    • • Count in groups of 5
      • Printable
    • • Count in groups of 5
      • Printable
    • • Count in groups of 5
      • Printable
    • • Rows of 5 (Duplicate of 28724 for app Beta_tests)
      • Tutorial
    • • Rows of 5 (Duplicate of 28724 for app Beta_tests)
      • Tutorial
    • • Identifying the amounts in a group
      • Tutorial
    • • Groups and rows of 5
      • Tutorial
    • • Groups of 5
      • Tutorial
    • • Rows of 5
      • Tutorial
    • • 
      • Groups of 5
      • Challenge
    • • 
      • Groups of 5
      • Practice
    • • 
      • Multiply by adding lots of 5
      • Practice
    • • 
      • Groups of 5
      • Assessment
    • • 
      • Rows of five
      • Practice

  • Count by 5s using a number line

    • Activities: 6 course, 3 extra

    • • Count by 5s using a number line
      • Tutorial
    • • Count by 5s using a number line
      • Tutorial
    • • Count by 5s
      • Practice
    • • Count by 5s using a number line
      • Practice
    • • Count by 5s using a number line
      • Practice
    • • Counting by 5
      • Tutorial

    Extra activities

    • • Count by 5s
      • Printable
    • • 
      • Counting by 5
      • Assessment
    • • 
      • Count by lots of 5
      • Practice

  • Count by 10s using a number line

    • Activities: 6 course, 5 extra

    • • Count by 10s using a number line
      • Tutorial
    • • Count by 10s
      • Practice
    • • Count by 10s using a number line
      • Practice
    • • Count by 10s using a number line
      • Practice
    • • Counting by 10
      • Tutorial
    • • Counting by 10
      • Tutorial

    Extra activities

    • • Countiby 10s
      • Printable
    • • Counting by 10
      • Printable
    • • 
      • Numbers Problem Solving
      • Assessment
    • • 
      • Count by lots of 10
      • Practice
    • • 
      • Counting by 10
      • Assessment

  • Use arrays to represent 2s, 5s and 10s

    • Activities: 4 course, 0 extra

    • • Use arrays to represent 2s, 5s and 10s
      • Practice
    • • Use arrays to represent 2s, 5s and 10s
      • Practice
    • • Use arrays to represent 2s, 5s and 10s
      • Practice
    • • Arrays 2, 5, 10 (up to 5 rows)
      • Practice

2.NBT.1 – Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

• 2.NBT.1.a – 100 can be thought of as a bundle of ten tens — called a “hundred.”

  • 3 learning outcomes – click to view

    Samples: Representing numbers using tens and ones (11-100). Place value concepts (bundled sticks). 

    • Place value - tens and ones (to 100)

      • Activities: 7 course, 3 extra

      • • Representing numbers using tens and ones (11-100)
        • Tutorial
      • • Numbers represented using MAB (up to 100)
        • Practice
      • • Representing numbers using tens and ones (11-100)
        • Practice
      • • Representing numbers using tens and ones (11-100)
        • Practice
      • • Representing numbers using tens and ones (11-100)
        • Practice
      • • Representing place value - to 100
        • Printable
      • • Place Values
        • Tutorial

      Extra activities

      • • Tens and ones - numbers up to 100
        • Printable
      • • 
        • Identifying Place Value
        • Practice
      • • 
        • Guessing game - Numbers to 100
        • Practice

    • Counting in tens and ones

      • Activities: 3 course, 3 extra

      • • Place value concepts (bundled sticks)
        • Practice
      • • Counting in tens and ones
        • Practice
      • • Place value 100
        • Practice

      Extra activities

      • • Counting in tens and ones
        • Printable
      • • Place value 100 concepts
        • Printable
      • • Place value 100 - concepts Answer sheet
        • Printable

    • Place value concepts (bundled sticks)

      • Activities: 1 course, 0 extra

      • • Place Values teens: counting 15 sticks
        • Tutorial

• 2.NBT.1.b – The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

  • 4 learning outcomes – click to view

    Samples: Place value - hundreds, tens and ones. Representing numbers using tens and ones (11-100). 

    • Place value - hundreds, tens and ones (to 999)

      • Activities: 4 course, 4 extra

      • • Place value - hundreds, tens and ones
        • Tutorial
      • • Place value - hundreds, tens and ones
        • Practice
      • • Place value - hundreds, tens and ones (to 999)
        • Printable
      • • Place Value
        • Tutorial

      Extra activities

      • • Place value - hundreds, tens and ones (to 999)
        • Printable
      • • Place Value
        • Tutorial
      • • Place value - hundreds, tens and ones
        • Tutorial
      • • 
        • Number guessing game - numbers to 1000
        • Practice

    • Place value - tens and ones (to 100)

      • Activities: 7 course, 3 extra

      • • Representing numbers using tens and ones (11-100)
        • Tutorial
      • • Numbers represented using MAB (up to 100)
        • Practice
      • • Representing numbers using tens and ones (11-100)
        • Practice
      • • Representing numbers using tens and ones (11-100)
        • Practice
      • • Representing numbers using tens and ones (11-100)
        • Practice
      • • Representing place value - to 100
        • Printable
      • • Place Values
        • Tutorial

      Extra activities

      • • Tens and ones - numbers up to 100
        • Printable
      • • 
        • Identifying Place Value
        • Practice
      • • 
        • Guessing game - Numbers to 100
        • Practice

    • Counting in tens and ones

      • Activities: 3 course, 3 extra

      • • Place value concepts (bundled sticks)
        • Practice
      • • Counting in tens and ones
        • Practice
      • • Place value 100
        • Practice

      Extra activities

      • • Counting in tens and ones
        • Printable
      • • Place value 100 concepts
        • Printable
      • • Place value 100 - concepts Answer sheet
        • Printable

    • Place value concepts (bundled sticks)

      • Activities: 1 course, 0 extra

      • • Place Values teens: counting 15 sticks
        • Tutorial

2.NBT.2 – Count within 1000; skip-count by 5s, 10s, and 100s.

• 3 learning outcomes – click to view

  Samples: Skip count by 2s. Count by 5s using a number line. Count by 10s using a number line. Skip count by 2s. 

  • Skip count by 2s

    • Activities: 3 course, 10 extra

    • • Skip count by 2s
      • Tutorial
    • • Skip count by 2s
      • Practice
    • • Investigating number patterns
      • Practice

    Extra activities

    • • 
      • Count by 2
      • Practice
    • • 
      • Count by 3
      • Practice
    • • 
      • Count by 5
      • Practice
    • • 
      • Continue a pattern by 3
      • Practice
    • • 
      • Count by 2
      • Practice
    • • 
      • Continue a pattern by 2 or 3
      • Practice
    • • 
      • Continue a pattern by 5
      • Practice
    • • 
      • Number patterns - counting on by 4 and 5
      • Practice
    • • 
      • Continue a pattern by 10
      • Practice
    • • 
      • Continuing a pattern - counting backwards
      • Practice

  • Count by 5s using a number line

    • Activities: 6 course, 3 extra

    • • Count by 5s using a number line
      • Tutorial
    • • Count by 5s using a number line
      • Tutorial
    • • Count by 5s
      • Practice
    • • Count by 5s using a number line
      • Practice
    • • Count by 5s using a number line
      • Practice
    • • Counting by 5
      • Tutorial

    Extra activities

    • • Count by 5s
      • Printable
    • • 
      • Counting by 5
      • Assessment
    • • 
      • Count by lots of 5
      • Practice

  • Count by 10s using a number line

    • Activities: 6 course, 5 extra

    • • Count by 10s using a number line
      • Tutorial
    • • Count by 10s
      • Practice
    • • Count by 10s using a number line
      • Practice
    • • Count by 10s using a number line
      • Practice
    • • Counting by 10
      • Tutorial
    • • Counting by 10
      • Tutorial

    Extra activities

    • • Countiby 10s
      • Printable
    • • Counting by 10
      • Printable
    • • 
      • Numbers Problem Solving
      • Assessment
    • • 
      • Count by lots of 10
      • Practice
    • • 
      • Counting by 10
      • Assessment

2.NBT.3 – Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

• 2 learning outcomes – click to view

  Samples: Place value. Writing numbers to 1000. Counting forwards and backwards by 10. Counting forwards and backwards by 10. 

  • Place Value - Numbers to 1000

    • Activities: 0 course, 3 extra

    Extra activities

    • • 
      • Place value
      • Practice
    • • 
      • Counting forwards and backwards by 10
      • Practice
    • • 
      • Counting forwards and backwards by 10
      • Practice

  • Writing numbers to 1000

    • Activities: 1 course, 0 extra

    • • Writing numbers to 1000
      • Practice

2.NBT.4 – Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

• 1 learning outcomes – click to view

  Samples: Comparing numbers to 1000 using <, > and =. Comparing numbers to 1000 using <, > and =. 

  • Comparing numbers to 1000 using <, > and =

    • Activities: 2 course, 1 extra

    • • Comparing numbers to 1000 using <, > and =
      • Practice
    • • Comparing numbers to 1000 using <, > and =
      • Practice

    Extra activities

    • • Comparing numbers to 1000 using <, > and =
      • Printable

2.NBT.5 – Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

• 21 learning outcomes – click to view

  Samples: Place value - adding on ones. Place value - adding two-digit numbers. Add multiples of 10. 

  • Place value - adding on ones

    • Activities: 1 course, 0 extra

    • • Place value - adding on ones
      • Practice

  • Place value - adding two-digit numbers

    • Activities: 2 course, 1 extra

    • • Place value - adding two-digit numbers
      • Practice
    • • Place value - adding two-digit numbers (with regrouping)
      • Practice

    Extra activities

    • • Place value - adding two-digit numbers
      • Printable

  • Add multiples of 10

    • Activities: 3 course, 4 extra

    • • Add multiples of 10
      • Tutorial
    • • Add multiples of 10
      • Practice
    • • Adding multiples of 10
      • Tutorial

    Extra activities

    • • Add multiples of 10
      • Printable
    • • Adding multiples of 10
      • Tutorial
    • • 
      • Addition problem solving
      • Assessment
    • • 
      • Adding lots of 10
      • Practice

  • Estimate sums by rounding two-digit numbers

    • Activities: 1 course, 2 extra

    • • Estimate sums by rounding two-digit numbers
      • Practice

    Extra activities

    • • Estimate sums by rounding two-digit numbers
      • Printable
    • • Estimating Answer sheet
      • Printable

  • Add two-digit numbers using the split strategy

    • Activities: 6 course, 2 extra

    • • Add two-digit numbers using the split strategy
      • Tutorial
    • • Add two-digit numbers using the split strategy
      • Practice
    • • Add two-digit numbers using the split strategy
      • Practice
    • • Add two-digit numbers using the split strategy
      • Printable
    • • Adding two digit numbers (split strategy)
      • Tutorial
    • • Adding two digit numbers (split strategy)
      • Tutorial

    Extra activities

    • • How to add using the split strategy
      • Tutorial
    • • Split strategy for addition
      • Practice

  • Add single-digit numbers to two-digit numbers

    • Activities: 3 course, 14 extra

    • • Add single-digit numbers to two-digit numbers
      • Tutorial
    • • Add single-digit numbers to two-digit numbers
      • Practice
    • • Adding on (numbers under 10)
      • Challenge

    Extra activities

    • • Add single-digit numbers to two-digit numbers
      • Printable
    • • Add single-digit numbers to two-digit numbers (problem solving)
      • Printable
    • • Adding on (numbers under 10)
      • Printable
    • • Add on numbers under 10
      • Tutorial
    • • Adding lots of 100 to numbers less than 1,000
      • Tutorial
    • • 
      • Adding lots of 100 to numbers less than 1,000
      • Assessment
    • • 
      • Add on numbers less than 10
      • Assessment
    • • 
      • Add numbers less than 10 to numbers less than 50
      • Challenge
    • • 
      • Adding lots of 10 to numbers less than 1,000
      • Challenge
    • • 
      • Add lots of 10 - Jump Strategy
      • Practice
    • • 
      • Adding lots of 10 to numbers less than 200
      • Assessment
    • • 
      • Adding lots of 10 to numbers less than 200
      • Challenge
    • • 
      • Adding lots of 10 to numbers less than 1,000
      • Assessment
    • • 
      • Adding lots of 100 to numbers less than 1,000
      • Challenge

  • Add two-digit numbers using the jump strategy

    • Activities: 6 course, 5 extra

    • • Add two-digit numbers using the jump strategy
      • Tutorial
    • • Add two-digit numbers using the jump strategy
      • Practice
    • • Add two-digit numbers using the jump strategy
      • Practice
    • • Add two-digit numbers using the jump strategy
      • Practice
    • • Adding two digit numbers (jump strategy)
      • Tutorial
    • • Adding two digit numbers (jump strategy)
      • Tutorial

    Extra activities

    • • Jump Strategy/Method Explained
      • Tutorial
    • • Jump Strategy/Method
      • Tutorial
    • • Mental strategies in addition - add on numbers up to 20
      • Tutorial
    • • 
      • Addition of two digit numbers
      • Challenge
    • • 
      • Addition of Two Digit Numbers
      • Assessment

  • Add two-digit numbers using the written strategy

    • Activities: 5 course, 11 extra

    • • Add two-digit numbers using the written strategy
      • Tutorial
    • • Add two-digit numbers using the written strategy
      • Practice
    • • Add two-digit numbers using the written strategy
      • Practice
    • • Adding two digit numbers (written strategy) no carrying
      • Tutorial
    • • Adding two digit numbers (written strategy) with carrying
      • Tutorial

    Extra activities

    • • Add two-digit numbers using the written strategy
      • Printable
    • • Add two-digit numbers using the written strategy
      • Printable
    • • Add two-digit numbers using the written strategy
      • Printable
    • • Adding two-digit numbers (written strategy)
      • Printable
    • • Adding two digit numbers (written strategy)
      • Printable
    • • Drill - Add on lots of 10 - written strategy
      • Printable
    • • 
      • Drill - Adding two digit numbers - written strategies (Auto-Generated)
      • Printable
    • • 
      • Addition of two digit numbers
      • Practice
    • • 
      • Addition of two digit numbers
      • Practice
    • • 
      • Addition of two digit numbers - without trading
      • Practice
    • • 
      • Addition of two digit numbers
      • Tutorial

  • Add two-digit numbers (problem solving)

    • Activities: 6 course, 12 extra

    • • Add two-digit numbers (problem solving)
      • Practice
    • • Add two-digit numbers (problem solving)
      • Practice
    • • Add two-digit numbers (problem solving)
      • Practice
    • • Add two-digit numbers (problem solving)
      • Practice
    • • Adding two digit numbers (problem solving)
      • Practice
    • • Adding two digit numbers (problem solving)
      • Practice

    Extra activities

    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Add two-digit numbers (problem solving)
      • Printable
    • • Adding two digit numbers (problem solving) Answer sheet
      • Printable
    • • 
      • Problem solving using addition
      • Assessment
    • • Subtraction - two digit numbers
      • Printable
    • • 
      • Addition of two digit numbers
      • Assessment
    • • 
      • Addition using the Jump Strategy/Method
      • Challenge

  • Subtract 10 from numbers

    • Activities: 8 course, 12 extra

    • • Subtract 10 from numbers
      • Tutorial
    • • Subtract 10 from numbers
      • Practice
    • • Subtract 10 from numbers (problem solving)
      • Practice
    • • Subtract 10 from numbers (problem solving)
      • Printable
    • • Subtracting 10
      • Tutorial
    • • Subtracting 10
      • Challenge
    • • Subtracting 10
      • Tutorial
    • • Subtracting 10
      • Practice

    Extra activities

    • • Subtract 10 from numbers
      • Printable
    • • Subtract 10 from numbers (problem solving)
      • Printable
    • • Subtract 10 from numbers (problem solving)
      • Printable
    • • Subtract 10 from numbers under 100
      • Printable
    • • Drill - Subtract 10 from numbers under 50
      • Printable
    • • Subtract 10 from larger numbers
      • Printable
    • • Subtract 10 from numbers
      • Printable
    • • 
      • Subtract 10 from larger numbers
      • Assessment
    • • 
      • Mental strategies - subtract multiples of 10 from numbers up to 200
      • Challenge
    • • 
      • Subtract 10 from larger numbers
      • Challenge
    • • 
      • Subtract 10 from numbers
      • Assessment
    • • 
      • Mental strategies - subtract multiples of 10 from numbers up to 200
      • Assessment

  • Subtract multiples of 10 from numbers

    • Activities: 4 course, 7 extra

    • • Subtract multiples of 10 from numbers
      • Tutorial
    • • Subtract multiples of 10 from numbers
      • Practice
    • • Subtract multiples of 10 from numbers (problem solving)
      • Practice
    • • Subtracting multiples of 10
      • Tutorial

    Extra activities

    • • Subtract multiples of 10 from numbers
      • Printable
    • • Subtract multiples of 10 from numbers (problem solving)
      • Printable
    • • Subtract multiples of 10 from numbers (problem solving)
      • Printable
    • • Subtracting multiples of 10
      • Printable
    • • Subtract Multiples Of 10
      • Tutorial
    • • Mental strategies - subtract multiples of 10 from numbers up to 2000
      • Printable
    • • Drill - Subtract multiples of 10 from numbers under 1000
      • Printable

  • Subtract from 100 (problem solving)

    • Activities: 6 course, 7 extra

    • • Subtract from 100
      • Tutorial
    • • Subtract from 100
      • Practice
    • • Subtract from 100 (problem solving)
      • Practice
    • • Subtracting from 100
      • Challenge
    • • Subtracting from 100
      • Tutorial
    • • Subtracting from 100
      • Tutorial

    Extra activities

    • • Subtract from 100
      • Printable
    • • Subtract from 100 (problem solving)
      • Printable
    • • Subtract from 100 (problem solving)
      • Printable
    • • Subtracting from 100
      • Printable
    • • Subtract from 100 - Written Strategy
      • Tutorial
    • • 
      • Subtract from 100
      • Practice
    • • 
      • Subtract from 100
      • Assessment

  • Find missing numbers in two-digit addition

    • Activities: 2 course, 5 extra

    • • Find missing numbers in two-digit addition
      • Tutorial
    • • Find missing numbers in two-digit addition
      • Practice

    Extra activities

    • • Find missing numbers in two-digit addition
      • Printable
    • • Adding two digit numbers (missing number)
      • Printable
    • • 
      • Drill - Add to 20 - missing number (Auto-Generated)
      • Printable
    • • Addition of two numbers - missing number
      • Tutorial
    • • Addition of two numbers - missing number
      • Printable

  • Make 100

    • Activities: 5 course, 3 extra

    • • Make 100
      • Tutorial
    • • Make 100
      • Practice
    • • Make 100
      • Practice
    • • Make 100 (problem solving)
      • Practice
    • • Make 100 (problem solving)
      • Practice

    Extra activities

    • • Make 100
      • Printable
    • • Make 100 (problem solving)
      • Printable
    • • Make 100 - Mental strategies
      • Tutorial

  • Subtract two-digit numbers using the adding-on strategy

    • Activities: 5 course, 0 extra

    • • Subtract two-digit numbers using the adding-on strategy
      • Tutorial
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice
    • • Subtract two-digit numbers using the adding-on strategy
      • Practice

  • Subtract two-digit numbers using the jump-back strategy

    • Activities: 5 course, 16 extra

    • • Subtract two-digit numbers using the jump-back strategy
      • Tutorial
    • • Subtract two-digit numbers using the jump-back strategy
      • Practice
    • • Subtract two-digit numbers using the jump-back strategy
      • Practice
    • • Subtracting two digit numbers (jump back strategy)
      • Tutorial
    • • Subtract single digit numbers from numbers under 100
      • Practice

    Extra activities

    • • 
      • Drill - Subtract single digit numbers from numbers under 100 (Auto-Generated)
      • Printable
    • • Drill - Subtract single digit numbers from numbers under 100
      • Printable
    • • Subtract single digit numbers from numbers less than 100
      • Printable
    • • 
      • Subtracting numbers under 20 from numbers under 100
      • Challenge
    • • 
      • Subtracting numbers under 20 from numbers under 100
      • Assessment
    • • 
      • Subtract single digit numbers from numbers less than 100
      • Assessment
    • • Timed Challenge: Subtract single digit numbers
      • Challenge
    • • 
      • Mental Strategies - Subtraction of numbers under 50
      • Practice
    • • 
      • Subtract 20 from numbers under 100
      • Challenge
    • • 
      • Subtract 20 from numbers under 100
      • Assessment
    • • 
      • Subtract 30 from numbers under 100
      • Challenge
    • • 
      • Subtract 30 from numbers under 100
      • Assessment
    • • 
      • Subtract 40 from numbers under 100
      • Assessment
    • • 
      • Subtract 40 from numbers under 100
      • Challenge
    • • 
      • Subtract 50 from numbers under 100
      • Challenge
    • • 
      • Subtract 50 from numbers under 100
      • Assessment

  • Subtract two-digit numbers using a written strategy

    • Activities: 6 course, 13 extra

    • • Subtract two-digit numbers using a written strategy
      • Tutorial
    • • Subtract two-digit numbers using a written strategy
      • Practice
    • • Subtracting two digit numbers (written strategy)
      • Practice
    • • Subtracting two digit numbers (written strategy)
      • Tutorial
    • • Subtraction - two digit numbers - without trading
      • Tutorial
    • • Subtracting two digit numbers (written strategy)
      • Tutorial

    Extra activities

    • • Subtract two-digit numbers using a written strategy
      • Printable
    • • Subtract two-digit numbers using a written strategy
      • Printable
    • • Subtract two-digit numbers using a written strategy
      • Printable
    • • Subtracting two digit numbers (written strategy)
      • Printable
    • • Subtracting two digit numbers (written strategy)
      • Printable
    • • 
      • Subtracting two digit numbers (written strategy)
      • Tutorial
    • • Subtracting two digit numbers (written strategy)
      • Tutorial
    • • Subtraction of two digit numbers
      • Printable
    • • 
      • Drill - Subtract from 100 - written strategy (Auto-Generated)
      • Printable
    • • Drill - Subtract from 100 - written strategy
      • Printable
    • • 
      • Subtraction - two digit numbers - without trading
      • Practice
    • • 
      • Subtraction - two digit numbers - using blocks
      • Practice
    • • 
      • Subtraction - two digit numbers
      • Practice

  • Subtract two-digit numbers (problem solving)

    • Activities: 6 course, 22 extra

    • • Subtract two-digit numbers
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtract two-digit numbers (problem solving)
      • Practice
    • • Subtracting two digit numbers (problem solving)
      • Practice

    Extra activities

    • • Subtract two-digit numbers
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtract two-digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtracting two digit numbers (problem solving)
      • Printable
    • • Subtract numbers less than 20
      • Printable
    • • Subtracting numbers under 20 from numbers under 100
      • Printable
    • • 
      • Problem solving using addition and subtraction
      • Assessment
    • • Drill - Subtract lots of 10 from numbers under 200
      • Printable
    • • Drill - Subtract numbers up to 100
      • Printable
    • • 
      • Problem solving using subtraction
      • Assessment
    • • 
      • Problem solving using addition and subtraction
      • Assessment
    • • 
      • Subtraction
      • Assessment
    • • 
      • Drill - Subtract numbers up to 100 (Auto-Generated)
      • Printable
    • • 
      • Subtraction - two digit numbers
      • Challenge
    • • 
      • Subtraction of two digit numbers
      • Challenge
    • • 
      • Subtraction of two digit numbers
      • Assessment

  • Adding two digit numbers (look for 10)

    • Activities: 2 course, 0 extra

    • • Adding two digit numbers (look for 10)
      • Tutorial
    • • Adding two digit numbers (look for 10)
      • Practice

  • Adding two digit numbers

    • Activities: 2 course, 1 extra

    • • Adding two digit numbers
      • Practice
    • • Adding two digit numbers
      • Practice

    Extra activities

    • • Adding two digit numbers
      • Printable

  • Match single-digit subtraction equations

    • Activities: 1 course, 0 extra

    • • Match single-digit subtraction equations
      • Practice