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Grade 8 · Decimal Fractions
Adding & Subtracting Decimals
MEMORANDUM
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Class: 
Date: 
Mark
  / 16

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
    4,6 + 2,35
    (2)
    4,60 + 2,35 = 6,95✓✓ (2)
  2. 2
    13,08 + 7,9
    (2)
    13,08 + 7,90 = 20,98✓✓ (2)
  3. 3
    9,5 − 3,27
    (2)
    9,50 − 3,27 = 6,23✓✓ (2)
  4. 4
    20 − 6,45
    (2)
    20,00 − 6,45 = 13,55✓✓ (2)
  5. 5
    0,75 + 0,8 + 1,2
    (2)
    2,75✓✓ (2)
  6. 6
    Estimate 19,7 + 4,2 by rounding to whole numbers.
    (2)
    20 + 4 = about 24 (exact: 23,9)✓✓ (2)
  7. 7
    A plank is 2,4 m long. 0,85 m is cut off. How much is left?
    (2)
    2,40 − 0,85 = 1,55 m✓✓ (2)
  8. 8
    Ann buys items for R32,40 and R15,85 and pays with R100. What change does she get?
    (2)
    Total 48,25; 100,00 − 48,25 = R51,75✓✓ (2)
TOTAL: 16 marks
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