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Grade 8 · Common Fractions
Multiplying & Dividing Fractions
MEMORANDUM
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Class: 
Date: 
Mark
  / 17

Answer all questions. Show all your working — marks are awarded for method as well as the final answer. Teacher copy: accept any correct equivalent method.

  1. 1
    1/2 × 3/5
    (1)
    (1 × 3)/(2 × 5) = 3/10✓ (1)
  2. 2
    2/3 × 3/4
    (1)
    6/12 = 1/2✓ (1)
  3. 3
    4/5 × 10
    (2)
    40/5 = 8✓✓ (2)
  4. 4
    Write down the reciprocal of 2/7.
    (1)
    7/2✓ (1)
  5. 5
    Write down the reciprocal of 5.
    (1)
    1/5✓ (1)
  6. 6
    3/4 ÷ 1/2
    (2)
    3/4 × 2/1 = 6/4 = 3/2 = 11/2✓✓ (2)
  7. 7
    2/3 ÷ 4/9
    (2)
    2/3 × 9/4 = 18/12 = 3/2 = 11/2✓✓ (2)
  8. 8
    5 ÷ 1/3
    (2)
    5 × 3 = 15✓✓ (2)
  9. 9
    11/4 × 2/5
    (3)
    5/4 × 2/5 = 10/20 = 1/2✓✓✓ (3)
  10. 10
    How many 1/8 pieces are there in 2 whole pizzas?
    (2)
    2 ÷ 1/8 = 2 × 8 = 16 pieces✓✓ (2)
TOTAL: 17 marks
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