These worksheets will get your students to practice applying commutative property and associative property of addition to add and subtract. This set focuses on first grade Common Core math standard OA.B.3, but you don't necessarily have to follow Common Core to teach these skills. These are fundamental skills for young students to develop better understanding of rudimentary addition and subtraction. These math worksheets are ideal for first and second grade. There are 20 pages in total.
Apply properties of operations as strategies to add and subtract. Examples: 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.)
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