CCSS.MATH.CONTENT.1.OA.B.3
Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
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Mental Math Addition Posters
Use this set of addition posters in your classroom when teaching different mental math strategies.
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Counting On: Addition Strategy Worksheet
Practice the “counting on” addition strategy to solve addition problems to 20.
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Fact Family Math Blast Off - Addition and Subtraction
Demonstrate an understanding of addition and subtraction fact families with a fun cut and sort activity.
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Adding and Subtracting Within 10 - Word Problem Task Cards
Solve word problems practicing addition and subtraction to ten with a set of printable task cards.
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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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Ladybug Addition and Subtraction Activity
A fun and simple adding and subtracting activity.
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Cover Up! - Addition Facts Game
Develop a love of addition facts with this multiplayer Valentine’s Day board game.
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Making Ten Activity
An activity to practice making 10 using objects, pictorial models, and number sentences.
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Word Problem Task Cards: Addition and Subtraction Within 10
Practice addition and subtraction within 10 with this set of 18 word problem task cards.
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Number Talks - Double Digit Addition Task Cards
Build number sense skills with this set of 24 task cards.
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Add and Reveal PowerPoint – Addition Practice
A PowerPoint for students to interact with when practicing addition facts.
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Addition Strategies: Base-Ten Blocks Worksheet
Practice using the strategy of using base-10 blocks and regrouping to find the sum.
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Subtraction with Ten Frames - Worksheet
Model and subtract numbers to twenty using ten frames with a handy ten-frame subtraction worksheet.
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Number Talks - Making Ten Task Cards
Build number sense skills with this set of 20 task cards.
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Number Matching Puzzle – Addition
A hands-on game to play when learning about adding larger numbers.
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Picture Addition Worksheet
A worksheet to practice the addition strategy of counting on.
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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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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 - 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 Made Easy: Counting On Strategy - Poster
Addition using the count on strategy.
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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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Number Talks - Fluency to 20 Task Cards
Build number sense skills with this set of 24 task cards.
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Addition Strategy - Counting On Worksheet
Solve addition problems in this 2-page Counting On Addition Worksheet.
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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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Making 10 Number Bonds - Worksheet
A worksheet to practice the addition strategy of making 10.
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Missing Addend to 10 - Flashcards
A set of flashcards to use when working with the addition strategy 'Making Ten'.
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Ten Frame Mats (Single and Double)
A ten frame mat and a double ten frame mat to use in a variety of ways.
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Addition Strategies: Make a Ten Worksheet
A 2-page worksheet that uses ten frames to model the “making ten” addition strategy.
