These worksheets will help your students understand subtraction as an unknown-addened problem. This skill will help them see how subtraction and addition are related. This set focuses on first grade Common Core math standard OA.B.4, but you don't necessarily have to follow Common Core to teach this skill. It is a 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.
Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.
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MORE MATH PRINTABLES:
[OA.B.4] Subtraction Relative to Addition
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