CCSS.MATH.CONTENT.2.NBT.B.9
Explain why addition and subtraction strategies work, using place value and the properties of operations.
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Addition Strategy - Counting On Worksheet
Solve addition problems in this 2-page Counting On Addition Worksheet.
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2-Digit Subtraction Within 100 - Puzzles
Practice a variety of subtraction strategies with a set of printable math puzzles.
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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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Double-Digit Addition Strategies Posters
Remind your students to use different addition strategies with a set of printable two-digit addition strategies.
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Jump Strategy Addition Mini Book
Use this mini-book to help your students learn how to use the jump strategy to solve two-digit addition problems.
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2-Digit Subtraction Model Match-Up
Use a rigorous subtraction matching game to match subtraction word problems with number sentences, bar models, and solutions.
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Exploring Subtraction Strategies Instructional Slide Deck
Explore and teach multiple subtraction strategies with an instructional slide deck
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Double-Digit Subtraction Strategies Posters
Remind your students to use different subtraction strategies with a set of printable subtraction anchor charts.
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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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Number Talks - Place Value Task Cards
Build number sense skills with this set of 24 task cards.
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Fact Family Find and Flip - One- and Two-Digit Addition and Subtraction
Addition and subtraction game cards demonstrating the relationship between fact families.
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Candy Cane Activity - Double Digit Subtraction Tarsia Puzzle
Practice double-digit subtraction with regrouping with a Christmas candy cane activity.
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Spooky Subtraction - 3rd Grade Halloween Math Game
Practice triple-digit subtraction with regrouping with an exciting 3rd Grade Halloween Math Game.
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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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Break Apart Addition Strategy Mini Book
Use this mini-book to help your students learn how to use the break apart strategy to solve two-digit addition problems.
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Hundreds Chart Addition Strategy Interactive Activity
Practice using the hundreds chart as an addition strategy with this fun interactive activity.
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Blast Off Addition Strategy Interactive Activity
Practice four different addition strategies in this fun space-themed interactive activity.
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Addition Within 100 Strip Diagram - Interactive Mystery Picture
Take a deep dive into using the strip diagram for addition within 100 with this fun mystery reveal interactive activity.
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Making Tens Subtraction Worksheet
Find friendly numbers to subtract with a printable subtraction worksheet.
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Number Talks - Double Digit Subtraction Task Cards
Encourage the use of mental math strategies with 2-digit subtraction number talks task cards.
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2-Digit Subtraction Using Bar Models- Differentiated Worksheets
Review and assess your students’ subtraction skills with differentiated 2-digit subtraction worksheets focusing on the bar model strategy.
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2-Digit Subtraction Using Bar Models- Task Cards
Review and assess your students’ subtraction skills with a set of 2-digit subtraction task cards focusing on the bar model strategy.
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Subtraction Methods - Printable Mini-Book
Review and practice various subtraction strategies with a printable 3-digit subtraction mini book.
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2-Digit Subtraction with Place Value Disks - Match Up
Practice using place value disks to solve 2-digit subtraction problems with a matching activity.
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Subtraction Using Base 10 Blocks - Worksheet
Subtract two-digit numbers using base-10 blocks with a printable subtraction worksheet.
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Number Bonds Subtraction - Worksheet
Practice subtraction using number bonds with differentiated number bond worksheets.
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Subtraction Strategies Puzzle Match
Practice identifying and using different subtraction strategies with a set of printable math puzzles.
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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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Fact Family Find and Flip - Double-Digit Addition and Subtraction
Practice working with addition and subtraction fact families using double-digits with this math game.
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Number Talks Teaching Resource Pack - Grade 2
A collection of number talks teaching resources that support meaningful and highly engaging conversations in the mathematics classroom.