Number Basics — Questions

IGCSE Mathematics (0580) practice questions. Work through each question before checking the solutions page.

Question 1

[2](a)Find the Highest Common Factor (HCF) of 36 and 48.

[2](b)Find the Lowest Common Multiple (LCM) of 36 and 48.

Question 2

[3](a)Write 72 as a product of its prime factors.

Question 3

[2](a)List all the factors of 24.

[1](b)State which of the factors of 24 are prime numbers.

Question 4

[3](a)Find the HCF and LCM of 60 and 84.

Question 5

[2](a)Write 108 as a product of prime factors.

Question 6

[2](a)Determine whether 91 is a prime number, showing your reasoning.

Question 7

[3](a)Find the LCM of 8, 12 and 20.

Question 8

[1](a)List the first five multiples of 7.

Question 9

[1](a)State whether 0 is an even or odd number, and explain why.

Question 10

[2](a)Arrange these numbers in ascending order: −5, 3, −8, 0, 2.

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