Module 3 · Factors and multiples · Lesson 8 of 39

Multiples

Multiples and divisibility are two sides of the same idea.

In this lesson · about 8 minutes

  • List multiples of a number
  • Give two reasons why one number is a multiple of another

A multiple of a number is what we get when we multiply it by a whole number. The multiples of 5 are 5, 10, 15, 20, 25, …

Multiples turn divisibility around. 10 ÷ 5 = 2 tells us 10 is divisible by 5; 2 × 5 = 10 tells us 10 is a multiple of 2 and of 5.

0 is a multiple of every number (any number × 0 = 0), but no number is divisible by 0, because dividing by 0 is never allowed.

Worked example

Is 80 a multiple of 10? Give two reasons.

There are two ways to show it.

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