# PRACTICE: Multiplication

Lesson

## Practice multiplication

We have been learning some ways to build our multiplication skills. These include:

•  making arrays  to show equal sized groups
•  noticing patterns  , such as doubling and skip-counting

We also worked on some time tables, including:

•  multiplying by 0 or 1
•  multiplying by 2
•  multiplying by 4
•  multiplying by 3
•  multiplying by 10
•  multiplying by 5

### Examples

#### Example 1

Find the product of 2\times 8.

Worked Solution
Create a strategy

This can be thought of as 2 groups of 8 stars, as represented in the picture below.

Apply the idea

In the above image there are 16 stars in total.2 \times 8 = 16

#### Example 2

Find the value of 6\times3.

Worked Solution
Create a strategy

We can think of 6\times 3 as 6 groups of 3 just like in the image below that has 6 groups of 3 squares:

Apply the idea

The above image has 18 squares in total.

6 \times 3 = 18

#### Example 3

Find the value of 5\times9.

Worked Solution
Create a strategy

We can think of 5\times 9 as 5 groups of 9 just like in the image below that has 5 groups of 9 squares:

Apply the idea

The above image has 45 squares in total.

5 \times 9 = 45

Idea summary

There are different ways to solve multiplication, including repeated addition and using arrays. We can also multiply our numbers in a different order, so 3 \times 4 has the same answer as 4 \times 3.

### Outcomes

#### MA2-6NA

uses mental and informal written strategies for multiplication and division