Lesson 4

Zoo Sticker Arrays

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
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Have students share solutions on a display or draw their pictures on the board. Have base-ten pieces readily available.

  1. image
    89 − 23 = 66
  2. image
    82 − 27 = 55
  3. image

K. Base-Ten Pieces

Show how to solve each problem with base-ten pieces.

  1. 89 − 23 =
  2. 82 − 27 =
  3. Check your answers using addition.