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GCE Mathematics 1990 Question 3

Question 3

Fractions, Decimals and Approximation

Express 0.00562 in standard form

  1. A.5.62 × 10−3
  2. B.5.62 × 10−2
  3. C.0.562 × 10−2
  4. D.5.62 × 102
  5. E.5.62 × 103
Show the answer and explanation

Answer: A (5.62 × 10−3)

Explanation

Move the decimal point 3 places to the right to get 5.62, so the power of 10 is −3.