Lesson 3

Growth Patterns on Planet Gzorp

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Task

Discuss students' estimation strategies.

    1. 3162
    2. 50
    3. 301
    4. 0.301
    5. 1.84
    6. 1521 R2
  2. Possible strategy: 0.23 is about 0.25 or 1/4. 1/4 of 8 is 2.

J. Practicing the Operations

Solve the following problems using paper and pencil or mental math. Estimate to be sure your answers are reasonable.

    1. 34 × 93 =
    2. 3500 ÷ 70 =
    3. 43 × 7 =
    4. 0.43 × 0.7 =
    5. 0.23 × 8 =
    6. 6086 ÷ 4 =
  1. Explain your estimation strategy for Question 1E.