WAEC Mathematics 1991 (August) Question 1

Question 1

Fractions, Decimals and Approximation

Express 0.0462 in standard form.

  1. A.0.462 × 10−1
  2. B.0.462 × 10−2
  3. C.4.62 × 10−1
  4. D.4.62 × 10−2
  5. E.4.62 × 103
Show the answer and explanation

Answer: D (4.62 × 10−2)

Explanation

Standard form needs one non-zero digit before the point: 0.0462 = 4.62 × 10−2.