Lesson 2

Multiplication Strategies

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

  1. 432
  2. 3507
  3. 4964
  4. 1012
  1. Students can use a counting-up strategy to solve D.
    3989 + 1 = 3990; 3990 + 10 = 4000; 4000 + 1001 = 5001.
    So the answer is 1 + 10 + 1001 = 1012.
    Discuss students' strategies.
  2. 5000 − 4000 = 1000

E. Arithmetic Review

Solve these problems using any method you choose. Estimate to see if your answers are reasonable. Use the strategies menus in the Student Guide Reference section.

  1. 54 × 8
  2. 2534 + 973
  3. 73 × 68
  4. 5001 − 3989
  1. Explain how to solve Question D using a counting strategy.
  2. Explain how you estimated to see if your answer is reasonable for Question D.