Lesson 1

Counting Kids

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

Use DPP item C to review addition and subtraction facts from Groups A–D.

  1. 40
  2. 80
  3. 90
  4. 160
  5. 30
  6. 20
  7. 110
  8. 50

C. Addition and Subtraction Facts 1

Solve these problems in your head.

  1. 20 + 20 =
  2. 40 + 40 =
  3. 50 + 40 =
  4. 80 + 80 =
  5. 50 − 20 =
  6. 60 − 40 =
  7. 60 + 50 =
  8. 80 − 30 =