Lesson 5

Model Repeated Addition and Subtraction

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

Students may use number lines, ten frames, connecting cubes, and 100 Charts to verify their answers. This item practices the addition facts in Group C.

    1. 6 + 3 = 9
    2. 16 + 3 = 19
    1. 6 + 4 = 10
    2. 16 + 4 = 20
    1. 6 + 5 = 11
    2. 16 + 5 = 21

6 is an addend in each top fact, and 16 is an addend in each related fact.
Since 16 is ten more than 6, solve the top fact and then add ten to solve the bottom fact.

O. Facts and Patterns 3

How can you use the top facts to solve the related fact under it?

  1. A. 6 + 3 = _____

    B. 16 + 3 = _____

  2. A. 6 + 4 = _____

    B. 16 + 4 = _____

  3. A. 6 + 5 = _____

    B. 16 + 5 = _____