# 1st Grade Common Core 1.OA.C.6 Addition, Subtraction within 20, Creating 10s

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Resource Type
Common Core Standards
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14 MB|10 pages
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Product Description
Within this resource packet you will find worksheets to reinforce common core math standard 1.oa.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 – 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).

4-6. Subtracting within 20
7-8. Creating Tens
9-10. Finding Equivalent Equations
Total Pages
10 pages
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N/A
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