Multiplication is commutative. This means the order of the factors can be changed without changing the calculation or product.

A factor is a number which exactly divides another whole number.

A product is the result of two or more numbers multiplied together.

Explain that factor pairs can be written in any order

Maths

In this unit pupils will represent the 2x 10x table in different ways and use 2x 10x table to solve problems. They will explain the relationship between adjacent multiples of 2/10 and that factor pairs can be written in any order. In the future unit pupils will represent the 5s in different ways. They will explain the relationship between adjacent multiples of 5 and how 5x and 10x are related.

In the prior unit pupils represented multiples of ten using numerals and names and and used knowledge of facts and unitising to add and subtract multiples of ten. In this unit pupils will represent the 2x 10x table in different ways and use 2x 10x table to solve problems. They will explain the relationship between adjacent multiples of 2/10 and that factor pairs can be written in any order.

Representing counting in 2s, 5s and 10s as the 2, 5 and 10 times tables

Multiplication is __________ because we can swap the factors and still have the same product.

Look at the image. Select the correct multiplication equation.

Look at the number sequence. To find the previous multiple of 2 you must ________ 2  
___, 18, 20

To find the next multiple of 2 in the count you must ___ 2
20, 22, ___

Laura is counting back in 2s. What is the previous multiple of 2? 14, 12, {{ }}

What is the missing multiple of 2? 18, {{ }}, 22

Aisha counts eyes. She knows that 9 children will have 18 eyes altogether. How many eyes will there be altogether if there are 10 children? {{ }} eyes

Match the multiplication expressions to the mixed operations so they are equal. 

This lesson will soon be taken down.

Explain that factor pairs can be written in any order

Lesson outcome