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WAEC Mathematics 2020 Question 1

Question 1

Fractions, Decimals and Approximation

Evaluate, correct to two decimal places, 75.0785 − 34.624 + 9.83

  1. A.30.60
  2. B.50.29
  3. C.50.28
  4. D.30.62
Show the answer and explanation

Answer: C (50.28)

Explanation

75.0785 − 34.624 = 40.4545, and 40.4545 + 9.83 = 50.2845, which is 50.28 to 2 d.p.