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Grade 8 · Decimal Fractions
Squares, Cubes & Roots of Decimals
MEMORANDUM
Name: 
Class: 
Date: 
Mark
  / 20

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
    0,42
    (2)
    4×4 = 16, 2 dp → 0,16✓✓ (2)
  2. 2
    0,52
    (2)
    0,25✓✓ (2)
  3. 3
    1,22
    (2)
    12×12 = 144, 2 dp → 1,44✓✓ (2)
  4. 4
    0,23
    (2)
    2×2×2 = 8, 3 dp → 0,008✓✓ (2)
  5. 5
    0,13
    (2)
    0,001✓✓ (2)
  6. 6
    0,09
    (2)
    9100 → 310 = 0,3✓✓ (2)
  7. 7
    0,64
    (2)
    64100 → 810 = 0,8✓✓ (2)
  8. 8
    1,44
    (2)
    144100 → 1210 = 1,2✓✓ (2)
  9. 9
    0,027
    (2)
    271000 → 310 = 0,3✓✓ (2)
  10. 10
    0,001
    (2)
    11000 → 110 = 0,1✓✓ (2)
TOTAL: 20 marks
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