Common Core Sheets 

Operations and Algebraic Thinking 
Add and subtract within 20. 
5. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). 
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Counting Up and Down 1oa5
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Each worksheet has 20 problems counting up or down within 20.
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Counting Up and Down 1oa5
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Count up or down to relate addition or subtraction to counting. 
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