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JAMB Mathematics 2008 Question 4

Question 4

Fractions, Decimals and Approximation

Express 123456 to 3 significant figures

  1. A.123 000
  2. B.124 000
  3. C.125 000
  4. D.126 000
Show the answer and explanation

Answer: A (123 000)

Explanation

Keep the first three digits 123; the next digit 4 is less than 5, so round down: 123 000.