Lesson 2

Using Common Denominators

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

  1. 6
  2. 2400
  3. 70
  4. 320
  5. 80
  6. 2800
  7. Since I know that 6 × 8 = 48, I also know that 48 divided by 8 = 6. That means that 4800 divided by 80 = 60 because the numbers are all multiples of 10.

G. Find the Unknown

Find the number n that makes each number sentence true.

  1. 42 ÷ n = 7
  2. n ÷ 6 = 400
  3. 560 ÷ n = 8
  4. n ÷ 4 = 80
  5. 4800 ÷ n = 60
  6. n ÷ 40 = 70
  1. Show or tell how you solved Question E.