iGCSE Mathematics (0580) :E1.9 Make estimates of numbers, quantities and lengths. iGCSE Style Questions Paper 2

Question

Calculate  \(\frac{5.27-0.93}{4.89-4.07}\)
Give your answer correct to 4 significant figures.

Answer/Explanation

Ans:

5.293 cao

Question

Write 23.4571 correct to
(a) 4 significant figures,
(b) the nearest 10.

Answer/Explanation

Ans:

(a) 23.46 cao
(b) 20 cao

Question

(a) Calculate \(\sqrt{5.7} – 1.03^2\)
Write down all the numbers displayed on your calculator.
(b) Write your answer to part(a) correct to 3 decimal places.

Answer/Explanation

Ans:

(a) 1.32656…
(b) 1.327

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