Number Toolkit (Cambridge (CIE) IGCSE Maths: Extended): Exam Questions

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From the list, write down a number that is

i) a multiple of 3,

[1]

ii) a cube number,

[1]

iii) a prime number,

[1]

iv) an irrational number.

[1]

Write down a prime number between 50 and 60.

Write down a prime number between 20 and 30.

Jimmy works at a shop for 26 hours in a week.

He is paid £13.50 an hour.

Work out the amount that Jimmy is paid in a week.

Jimmy is working an extra 10 hours during a holiday period.

For each extra hour, his employer pays him an extra 50% as an addition to his usual hourly rate.

How much his he paid in total for this week?

1, 2, 3, 5 and 7 are all common factors of two numbers.
Write down the digit that the two numbers must end in.

Insert one pair of brackets to make this calculation correct.

Explain why is irrational.