6. Multiplication and division

Lesson

Can you write repeated addition as a multiplication number sentence?

Write this addition as a multiplication.

10 +10 +10

Worked Solution

Idea summary

If we are adding groups of the same size, we can also write it as a multiplication:

\text{Number of groups}\times\text{Amount in each group}

Let's look at how to triple or multiply numbers by 3.

Find the product of 6\times 3.

Worked Solution

Idea summary

Multiplying by three is the same as tripling and can be thought of as the total of three equally sized groups.

uses mental and informal written strategies for multiplication and division