# Polygon Puzzles - Subtraction

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PDF | 9 pages|Grades: 1 - 3

A set of 7 polygon puzzles to practice solving subtraction sentences.

Use this resource when learning to solve subtraction sentences.

How to set up this resource:

• Print out 7 of the polygon puzzle mats on cardstock for added durability.
• Print out each puzzle on cardstock and cut out the pieces. Store each puzzle separately with one of the polygon puzzle mats in a resealable bag to be used again and again.
• TIP: Draw the same shape on the back of each puzzle piece in a set so that you know those pieces belong together.

Students are to put the puzzle back together by connecting the difference with the corresponding number sentence. The puzzles start out with basic subtraction facts and move up in complexity. The hardest puzzle includes 3-digit numbers.

A full set of instructions and an answer key for each puzzle is included in the download.

These puzzles are great to use as math center activities.

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#### Common Core Curriculum alignment

• CCSS.MATH.CONTENT.1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - ...

• CCSS.MATH.CONTENT.2.OA.B.2

Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

• CCSS.MATH.CONTENT.2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

• CCSS.MATH.CONTENT.2.NBT.B.6

Add up to four two-digit numbers using strategies based on place value and properties of operations.

• CCSS.MATH.CONTENT.3.NBT.A.2

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. #### Find more resources for these topics

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