iGCSE Mathematics (0580) :E1.13 Use a calculator efficiently.iGCSE Style Questions Paper 2

Question

Use your calculator to work out \(\sqrt{10+0.6\times (8.3^{2}+5)}.\)

Answer/Explanation

Ans: 7.37 or 7.371… 

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

Question

(a) Use a calculator to work out \(\frac{5^{0.4} – \sqrt{3}}{0.13 – 0.015}\)
Write down all the digits in your calculator display.
(b) Write your answer to part (a) correct to 2 significant figures.

Answer/Explanation

Ans:

(a) 1.49220……
(b) 1.5

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