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CAIE IGCSE Mathematics Extended E1.9 Estimation Questions

Practise rounding values, estimating calculations and choosing a sensible degree of accuracy for numerical answers in context.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Covered syllabus points

E1.9.1 Round values to a specified degree of accuracy.E1.9.2 Make estimates for calculations involving numbers, quantities andE1.9.3 Round answers to a reasonable degree of accuracy in the context of a

Question 1

[Maximum number: 1]

One year, a farmer makes a profit of $ 24730 selling eggs.

Write this profit

correct to 2 significant figures
$

Question 2

[Maximum number: 3]

Malena has 450 fruit trees.
The fruit trees are in the ratio apple: pear: plum =8: 7: 3.

Each apple tree produces 48.5 kg of apples.

The apples have an average mass of 165 g each.
Calculate the total number of apples produced by the 200 trees.
Give your answer correct to the nearest 1000 apples.

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