Lesson 8

Subtraction Strategies

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
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Encourage students to share their strategies and to record number sentences for each. Cubes should be available for students.

  1. 2 bags; 10 − 8 = 2
    8 + 2 = 10
  2. 3 times; 10 − 7 = 3
    7 + 3 = 10

AA. At the Circus

  1. The peanut seller started with 10 bags of peanuts. He sold 8 bags. How many does he have left?
  2. During the whole show, the acrobat walks across the tightrope 10 times. In the first half of the show, she walks across 7 times. How many more times will she walk the rope?