Lesson 5

Explore Circumference and Diameter

Est. Class Sessions: 4

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

Use estimation strategies to decide which answer is most reasonable for each number sentence.

  1. 88; 91.14
  2. 0.6; 0.648
  3. 20; 20.25
  4. 2.4; 2.428
  5. 1; 0.9996

Z. Multiplying Decimals

Circle the most reasonable estimate, then solve each problem.

  1. 21.7 × 4.2 = 88   or   84
  2. 1.2 × 0.54 = 0.5   or   0.6
  3. 4.5 × 4.5 = 16   or   20
  4. 0.4 × 6.07 = 2.4   or   24
  5. 0.98 × 1.02 = 1   or   9