Lesson 5

Base-Ten Hoppers

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
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TIMS Task

This task reviews the subtraction facts in Groups 5 and 6.

  1. 5 + 8 = 13                       8 + 5 = 13
  2. 5 + 2 = 7                         2 + 5 = 7
  3. 8 + 4 = 12                       4 + 8 = 12

N. Fact Families

Sort subtraction flash cards from Group 5 and Group 6 into pairs of facts that belong to the same fact family. Be ready to discuss the strategies you used to make pairs.

  1. What are the addition number sentences that go with 13 − 8?

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  2. What are the addition number sentences that go with 7 − 5?

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  3. What are the addition number sentences that go with 12 − 4?

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