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In Course: GCSE Mathematics: Lower Tier

GCSE Maths: Factors, Multiples and Primes

Learn to identify factors, multiples, and prime numbers. This deck also covers how to express a number as a product of its prime factors, and how to find the Highest Common Factor (HCF) and Lowest Common Multiple (LCM).
A close-up photograph of a child's hands using colorful wooden blocks to build a tower, some blocks have prime numbers written on them, like 2, 3, 5, and 7. The lighting is warm and inviting, suggesting a playful learning environment.

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Deck Contents

24 Cards
Lesson#1
Welcome to this deck on factors, multiples and primes. We'll start by understanding what these terms mean. Then, we'll learn how to break down any number into its prime factors. Finally, we'll use these ideas to find the Highest Common Factor, or HCF, and the Lowest Common Multiple, or LCM, of two numbers.
Lesson#2
Let's start with factors. A factor is a number that divides exactly into another number, with no remainder. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12. Each of these numbers divides into 12 perfectly.
Quiz#3
What is a factor of a number?

A number that divides into it exactly

Quiz#4
Is 5 a factor of 20?

Yes

Quiz#5
What is always the smallest factor of any whole number greater than zero?

1

Lesson#6
Next up are multiples. A multiple of a number is what you get when you multiply it by another whole number. In other words, it's any number in its times table. For example, the first few multiples of 5 are 5, 10, 15, 20, and so on.

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