Lesson 8

Prime Factors

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Task

  1. 60
  2. 320
  3. 360
  4. 240
  5. 75
  6. 120
  7. 400
  8. 300
  9. 810
  10. 300
  11. 210
  12. 60
  1. Strategies may vary. A possible strategy is to think of money. Multiply 50¢ × 2 first to get $1 or 100¢. Then multiply 4 × 100¢ to make 400¢.

X. Multiply

Find a number for n that makes each sentence true.

  1. 3 × 5 × 4 = n
  2. n = 4 × 80
  3. 40 × 3 × 3 = n
  4. 4 × 6 × 10 = n
  5. 5 × 3 × 5 = n
  6. 20 × 6 = n
  7. 4 × 50 × 2 = n
  8. 4 × 3 × 25 = n
  9. 90 × 9 = n
  10. 50 × 6 = n
  11. 3 × 70 = n
  12. 360 = 6 × n
  1. Explain your strategy for Problem G.