Understand and apply properties of operations and the relationship between addition and subtraction
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Change It! – Addition to 20 Hands-On Activity
Practice addition to 20 by rearranging the parts of whole numbers into different combinations with this hands-on math activity.
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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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Feed the Pumpkins - 1st Grade Subtraction Worksheet
Feed the pumpkins and practice subtraction to twenty with a Halloween subtraction worksheet.
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Part Part Whole — Hands-On Activity Mat
Use this hands-on addition and subtraction part part whole activity mat in your next guided math group lesson!
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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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Subtraction Stew - Halloween Math Worksheet
Have some spooky subtraction fun with a Halloween picture-model 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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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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Numbers to 30 - Tens Frames - Printable
Use a printable ten frame when working on counting, addition and subtraction, odd and even numbers, or place value.
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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 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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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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Rainbow Number Fact Cards
Practice rainbow facts with these fun fact families to ten posters for your classroom!
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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.
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Decomposing Numbers – Word Problem Worksheet
Challenge students to decompose numbers presented in a word problem by rearranging the parts and showing different combinations.
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Counting On Bingo
Engage your students with a whole class bingo game while using the counting-on strategy to add within 20.
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Counting On Cover Up Game
Practice the counting-on strategy with this engaging cover-the-board game.
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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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Mental Math Subtraction Printable Posters
Use this set of subtraction posters in your classroom when teaching different mental math strategies.
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Christmas Color-By-Addition-Fact Worksheets
Boost addition skills and bring a bit of Christmas magic into the classroom with Christmas color-by-number addition worksheets.
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Christmas Math Worksheets - Addition and Subtraction Mazes
Navigate these Christmas math mazes with addition and subtraction facts to keep those minds active!
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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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Add and Reveal PowerPoint – Addition Practice
A PowerPoint for students to interact with when practicing addition facts.
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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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Cover Up! - Addition Facts Game
Develop a love of addition facts with this multiplayer Valentine’s Day board game.
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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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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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Number Matching Puzzle – Addition
A hands-on game to play when learning about adding larger numbers.
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Number Talks Teaching Resource Pack - Grade 1
A collection of number talks teaching resources that support meaningful and highly engaging conversations in the mathematics classroom.