  # Multiplying and Dividing by Tenths

In this worksheet, students practise multiplying and dividing by tenths. They should first attempt their answers mentally. Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Four Operations for All Numbers

Difficulty level:   #### Worksheet Overview

This worksheet is about multiplication and division by tenths.

Work out the following problems mentally.

Example 1

0.9 &times; 0.9

9 &times; 9 = 81

As we've multiplied both 0.9's by 10 we've multiplied by a total of 100. This means we will need to divide our answer by 100.

So, 0.9 &times; 0.9 = 0.81

Example 2

0.9 &times; 9000

9 &times; 9000 = 81000

As we've multiplied 0.9 by 10 to get 9 we will need to divide our answer by 10.

So, 0.9 &times; 9000 = 8100

Example 3

8.1 &divide; 9

81 &divide; 9 = 9

As we've multiplied 8.1 by 10 to get 81 we will need to divide our answer by 10.

So, 8.1 &divide; 9 = 0.9

Example 4

8.1 &divide; 0.9

81 &divide; 9 = 9

As we've change the two values using the same proportion we don't need to do anything to the answer we get.

### What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started 