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# 1st Grade Common Core Math Worksheets Fluently Add and Subtract 1.OA.6

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The attachment is a packet of five days of worksheets for first grade common core 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).Each day has two worksheets, designed to be copied front and back. The front page focuses on the standard of the week and the back is a review of previous information. They all contain place value review and word problems, including an area to write an equation.

The review concepts this week are:

1.NBT.3 Comparing numbers

1.OA.2 Solve word problems that call for the addition of three whole numbers whose sum is less than or equal to 20
Total Pages
10 pages
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Teaching Duration
1 Week
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