Add and Subtract Within 20

Break down addition and subtraction into short sentences using this brief activity. Each question prompts scholars to make a number by doing three math operations. For the first, they make 10 by adding three, adding five, and subtracting three. Because these are written out, the process is more transparent and may help some learners grasp these skills. Learners do this for three prompts, each giving three ways to make that number. Consider instructing pupils where they should show their answers and work.

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K - 2nd
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