Add and subtract within 20
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Number Chart – 1-20
A bright number chart representing numbers 1-20.
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Addition Strategy - Decompose, Then Make 10 Worksheet
Build addition strategies using digits 1-10 with this two-page decomposing numbers worksheet.
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Tens Frame - Addition and Subtraction Match-Up Activity
Build addition and subtraction skills with two tens frame matching games.
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Ten is a Match! - Memory-Style Game
Practice matching two numbers that add up to 10 with this set of 24 number cards.
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Making Ten Cut and Paste Worksheet
A cut and paste worksheet to practice finding the missing addend when making ten.
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Number Talks - Balancing Equations Task Cards
Build number sense skills with this set of 40 task cards.
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Number Talks - Target Number Task Cards
Build number sense skills with this set of 20 task cards.
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Plus One and Minus One Math Machine Worksheet
A worksheet to practice generating a number that is one more than or one less than another number.
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Friends of 20 – Addition Match-up Activity
A set of 40 matching cards to explore the number combinations of 20.
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Missing Addend Picture Puzzle – Level 1
Solve the missing addition sentence by matching the addend with its equation, completing the puzzle.
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Friends of... 1 to 10 - Black and White Version
A set of 10 posters showing the different combinations to make the numbers 1 to 10.
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Addition Up to 20 - Star Matchup Cards
A set of matchup cards to practice adding within 20.
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Addition Up To 20 - Star Matchup Cards
A set of matchup cards to practice adding within 20.
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Addition Up To 20 - Owl Matchup Cards
A set of matchup cards to practice adding within 20.
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Addition Up To 20 - Monster Matchup Cards
A set of matchup cards to practice adding within 20.
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Ladybug Addition and Subtraction Activity
A fun and simple adding and subtracting activity.
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Fact Family Find and Flip - Addition and Subtraction Up to 20
Addition and subtraction game cards demonstrating the relationship between fact families.
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Color by Numbers - Adding Single-Digit Numbers
A set of 5 color by number activity pages to use when practicing addition facts.
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Open-ended Math Problem Solving - Grades 1, 2, and 3 (Task Card Version)
A set of 20 open-ended problem solving task cards covering a range of mathematical concepts.
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Picture Addition Worksheet
A worksheet to practice the addition strategy of counting on.
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Rainbow Numbers Worksheet
A worksheet using rainbow numbers.
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Rainbow Numbers Poster
A poster showing the different combinations of 10.
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Counting On Addition Dominoes
A set of addition dominoes to use in the classroom when applying counting on strategies.
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Musical Equations Active Learning
A whole class active game that encourages learning through a physical setting.
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Double Bubble – Doubling Game
Practice the doubles addition strategy with this fun board game.
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Friends of 30 Dominoes
A set of dominoes to use in the classroom when matching friends of 30.
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Doubles Minus One - Worksheet
Practice the doubles minus one addition strategy with this one-page worksheet.
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Doubles Plus One - Grid Game
Practice the doubles plus one addition strategy with this dice game.
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Doubles Minus One - Grid Game
Practice the doubles minus one addition strategy with this dice game.
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Doubles Plus One - Dice Roll Worksheet
Practice the doubles plus one addition strategy with this one-page worksheet.
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Doubles Minus One - Dice Roll Worksheet
Practice the doubles minus one addition strategy with this one-page worksheet.
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Doubles Minus 1 - Game Boards
30 game boards to use when practicing the doubles minus one strategy with single and double-digit numbers.