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# Math Puzzles Addition to 20  Grade Levels
K - 2nd
Subjects
Standards
Resource Type
Formats Included
• PDF
Pages
10 pages
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### Description

Are you looking for a fun way for your students to practice their addition number facts to 20? These math puzzles are perfect for reinforcing basic addition facts to twenty.

Includes:

• Numbers 6-20 with pre-written addition sums

• Blank puzzle to add your own numbers or sums

This pack includes a Teaching Guide that provides tips for implementing these puzzles in your classroom,  including ideas for individual, or small group activities, centers, and games. Ready to print, cut, and use!

Want more puzzles? Check out these:

Addition to 100 Puzzles

Subtraction within 100 Puzzles

Representing Numbers to 100 Puzzles

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Jennifer Douglas

Total Pages
10 pages
Answer Key
Does not apply
Teaching Duration
Lifelong tool
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### Standards

to see state-specific standards (only available in the US).
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
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 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Apply properties of operations as strategies to add and subtract. 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.)

### Questions & Answers

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