# 3.07 x5, x10

Lesson

There is a relationship between the $10$10 times tables and the $5$5 times tables.

Can you solve this problem? Can you then find half of the answer?

$10\times7$10×7

## Learn

Let's look at how to multiply numbers by $10$10.

### Apply

##### Question 1

$10\times4$10×4

## Learn

Similar to how we can use a doubling strategy for our $2,4$2,4 and $8$8 times tables, we can use a halving strategy for our $5$5 times tables because half of $10$10 groups is $5$5 groups. Watch this video to see how.

### Apply

##### Question 2

$8\times5$8×5

Remember!

You can also reverse this strategy and double the answers to $5$5 times tables to work out the answers to the $10$10 times tables.

### Outcomes

#### VCMNA155

Recall multiplication facts up to 10 × 10 and related division facts