.Envision Math 2.0 - Topic 4 Subtraction Facts to 20:

Standards 1.OA.A.1, 1.OA.B.4, 1.OA.C.5, 1.OA.C.6 Students will use different strategies to solve subtraction facts to 20. One of the strategies your child will use is Make 10 to Subtract. This strategy helps break a subtraction problem into two simpler problems. The subtraction strategies in this topic will also help your child communicate mathematical ideas and solve word problems. Make 10 to Subtract You can make 10 to help find 13 - 5. First subtract 3 to make 10. 13 - 3 = 10 Then subtract 2 more because 3 + 2 = 5. You need to subtract 5 altogether. 10 - 2 = 8 So, 13 - 5 = 8.

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