6. Multiplication strategies

Lesson

Can you write a repeated addition as a multiplication number sentence?

Write this addition as a multiplication. 3+3+3+3+3+3

Worked Solution

Idea summary

We can rewrite the addition as a multiplication using: \text{Number of groups}\times\text{Amount in each group}

Let's use what we know about writing repeated addition as multiplication number sentences and use it to solve questions as well.

Answer the following:

a

Write this addition as a multiplication:\,\, 4+4+4+4+4

Worked Solution

b

Find the value of 5 \times 4.

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}

To find the answer we can use skip counting or a multiplication table.

uses mental and informal written strategies for multiplication and division