Lesson 3

10 Tens

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
X

Encourage students to work individually to solve each problem. Then ask students to share their methods, discussing their various strategies. For example, for A some students may suggest counting up. Counting back may be used for E.

  1. 10
  2. 5
  3. 10
  4. 3
  5. 2
  6. 6

     G. Possible response: I counted up from 7 to 10.

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G. Subtraction 1

Use cubes, your number line, or ten frames.

  1. 6 + 4 =
  2. 9 − 4 =
  3. 7 + 3 =
  4. 10 − 7 =
  5. 9 − 7 =
  6. 9 − 3 =

    G. Show or tell how you solved Question D.








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