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2 marksApproximation

CSEC Mathematics · 2003 (Specimen) · Paper 2 · Question 1(a)(iii)

Computation exercises involving real numbers.

Evaluate \sqrt{87.2}, writing your answer correct to 3 significant figures.

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Other parts of this question

  1. 1(a)(i)Evaluate 1.5^2 - 0.5^2.[1 mark]
  2. 1(a)(ii)Evaluate \frac{4.2 + 1.4}{0.02 \times 0.7}.[1 mark]
  3. 1(b)(i)Calculate how much, to the NEAREST cent, Mr Lee paid for EACH shirt.[1 mark]
  4. 1(b)(ii)Mr Lee sold the shirts at $19.99 EACH. Calculate the profit on EACH shirt.[2 marks]
  5. 1(b)(iii)Calculate the profit in (ii) above as a percentage of the cost price of a shirt.[2 marks]
  6. 1(b)(iv)Calculate for how much, to the NEAREST cent, Mr Lee should sell a shirt in order to obtain a profit of 45%.[2 marks]

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