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Grade 8 · Exponents
Exponents: Notation, Squares, Cubes & Roots
MEMORANDUM
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Mark
  / 10

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
    Write 7 × 7 × 7 × 7 in exponential form.
    (1)
    74✓ (1)
  2. 2
    Calculate 26.
    (1)
    2 × 2 × 2 × 2 × 2 × 2 = 64✓ (1)
  3. 3
    Calculate 103.
    (1)
    10 × 10 × 10 = 1 000✓ (1)
  4. 4
    Calculate √144.
    (1)
    12 (12 × 12 = 144)✓ (1)
  5. 5
    Calculate 3√125.
    (1)
    5 (5 × 5 × 5 = 125)✓ (1)
  6. 6
    Calculate 32 + 42.
    (2)
    9 + 16 = 25✓✓ (2)
  7. 7
    Write 3 200 000 in scientific notation.
    (2)
    3,2 × 106✓✓ (2)
  8. 8
    Write 5,4 × 103 as an ordinary number.
    (1)
    5 400✓ (1)
TOTAL: 10 marks
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