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JAMB Mathematics 1995 Question 5

Question 5

Fractions, Decimals and Approximation

Express the product of 0.0014 and 0.011 in standard form.

  1. A.1.54 × 10−2
  2. B.1.54 × 10−3
  3. C.1.54 × 10−4
  4. D.1.54 × 10−5
Show the answer and explanation

Answer: D (1.54 × 10−5)

Explanation

14 × 11 = 154, and there are 4 + 3 = 7 decimal places, so the product is 0.0000154 = 1.54 × 10−5.