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WAEC Mathematics 2025 Question 15

Question 15

Fractions, Decimals and Approximation

Write 0.0364891 in three significant figures and express the answer in standard form.

  1. A.3.65 × 102
  2. B.3.64 × 102
  3. C.3.64 × 10−2
  4. D.3.65 × 10−2
Show the answer and explanation

Answer: D (3.65 × 10−2)

Explanation

To three significant figures 0.0364891 is 0.0365 (the 4th figure, 8, rounds up), which is 3.65 × 10−2.