passwella.
Menu

WAEC Mathematics 2009 Question 30

Question 30

Fractions, Decimals and Approximation

Express 2.7864 × 10−3 to two significant figures.

  1. A.0.28
  2. B.0.27
  3. C.0.0028
  4. D.0.0027
Show the answer and explanation

Answer: C (0.0028)

Explanation

2.7864 × 10−3 = 0.0027864, which is 0.0028 to 2 significant figures.