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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Ten Frame Mats (Single and Double)
Explore numbers to ten and beyond with this printable tens frame template.
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Making Ten Activity
Practice making 10 using objects, pictorial models, and number sentences with this activity mat.
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Double Dinos - Using Doubles Facts to Add Near Doubles Worksheet
Practice the “near doubles” addition strategy to solve addition problems to 20.
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Subtraction Fact Fluency Assessments
Assess and track subtraction fact fluency with a printable Math Fact Fluency program for subtraction facts.
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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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Back to School Supply Shopping Task - Primary Grades
Calculate the cost of school supplies and answer questions with this back-to-school math activity.
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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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Counting On – Word Problem Worksheet
Practice adding within 20 by using the counting on strategy to solve word problems.
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Addition Strategies: Using Doubles Worksheet
Practice the doubles addition strategy to solve addition problems to 20.
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Making 10 Number Bonds - Worksheet
A worksheet to practice the addition strategy of making 10.
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Addition Strategy - Counting On Worksheet
Solve addition problems in this 2-page Counting On Addition Worksheet.
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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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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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Combinations of 10 and 20 Posters
Easily recognize combinations of 10 and combinations of 20 with this visual poster set.
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Addition to 20 Activity - Winter Math Puzzle for 1st Grade
Practice addition facts up to 20 with a printable winter math puzzle for kindergarten and first-grade students.
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Feed the Pumpkins - 1st Grade Subtraction Worksheet
Feed the pumpkins and practice subtraction to twenty with a Halloween subtraction worksheet.
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Missing Addend to 10 Flashcards
Practice all the ways to make ten with this set of flashcards.
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Making Monsters Subtraction - Halloween Math Worksheet
Have some spooky subtraction fun with three differentiated Halloween subtraction worksheets.
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Subtraction Stew - Halloween Math Worksheet
Have some spooky subtraction fun with a Halloween picture-model subtraction worksheet.
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Number Bonds Worksheet - Cut and Paste
Practice subtraction up to twenty with a cut-and-paste number bond worksheet.
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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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Subtraction Made Easy: Counting Back on a Number Line — Printable Poster
Provide your students with a daily reminder of the subtraction on a number line strategy with a printable anchor chart.
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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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Subtraction Strategies - Ten Frame Printable Bingo Game
Practice using ten frames to subtract single-digit numbers in a whole class bingo game.
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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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Subtraction within 20 - Color by Number Worksheet
Reveal the mystery picture by solving the subtraction problems with a color-by-number worksheet.
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Sunflower Subtraction Strategies Interactive
Practice using the ten-frame subtraction strategy with a fun self-checking interactive activity.
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Subtraction Using Picture Models Worksheet
Practice subtracting numbers to 12 using picture models with a printable subtraction worksheet.
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Pirate's Plunder - Number Line Subtraction Game
Practice using the jump strategy for subtraction from 20 with an exciting pirate-themed math game.
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Subtraction Strategy Work Mats
Practice using a variety of subtraction strategies to solve problems with a set of printable subtraction work mats.
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Addition and Subtraction Fact Families Teaching Presentation
Use this 19-slide editable slide deck when introducing addition and subtraction fact families to your students.
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Math Warm-Ups Interactive PowerPoint - Grade 1
A PowerPoint providing a series of warm-up activities for Grade 1 students across the mathematics curriculum.