Lesson 1

Ratios, Recipes, and Proportions

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

  1. 4.0
  2. 0.63
  3. 0.012
  4. 27
  5. 6.4
  6. 2.4
  7. 0.3
  8. 0.56
  1. Possible response: One tenth of ninety is nine so three tenths of ninety will be 3 × 9 or 27.

A. Mental Computation

Solve the following using mental math strategies.

  1. 0.4 × 10 =
  2. 0.9 × 0.7 =
  3. 0.06 × 0.2 =
  4. 0.3 × 90 =
  5. 0.8 × 8.0 =
  6. 60 × 0.04 =
  7. 0.5 × 0.6 =
  8. 0.07 × 8 =
  1. Show or tell how you solved Question D.