# Decimals: Multiplying by 100

In this worksheet, students multiply numbers by 100 by shifting digits two places to the left in a grid.

Key stage:  KS 2

Curriculum topic:   Number: Multiplication and Division

Curriculum subtopic:   Multiply/Divide Using Decimals

Difficulty level:

### QUESTION 1 of 10

When we multiply numbers by 100, we do not simply add 00 to the end.

When the numbers are decimals, this rule does not work.

54.6 × 100 does not equal 54.600

When we multiply numbers by 100, each digit must move two places to the left.

When we look at the columns in a Th, H, T, U grid we notice that Thousands are 100 times bigger than Tens, Hundreds are 100 times bigger than units, Tens are 100 times bigger than tenths etc...

*Note that the U for Units is another term for Ones.

e.g. Work out:

54.6 × 10 = 5460

Here is 54.6 in a Th, H, T, U grid.

Each digit moves two places to the left.

Remember to fill in that 0 in the units column.

So  54.6 × 100 = 5460

Want to understand this further and learn how this links to other topics in maths?

Why not watch this video?

Work out:

5.38 x 100

Work out:

5.07 x 100

Work out:

6.9 x 100

Work out:

12.35 x 100

Work out:

10.3 x 100

Work out:

1.752 x 100

Work out:

10.123 x 100

Work out:

0.123 x 100

Work out:

42.3 x 100

Work out:

0.03 x 10

• Question 1

Work out:

5.38 x 100

538
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 5.38 becomes 538
• Question 2

Work out:

5.07 x 100

507
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 5.07 becomes 507
• Question 3

Work out:

6.9 x 100

690
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 6.9 becomes 690
• Question 4

Work out:

12.35 x 100

1235
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 12.35 becomes 1235
• Question 5

Work out:

10.3 x 100

1030
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 10.3 becomes 1030
• Question 6

Work out:

1.752 x 100

175.2
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 1.725 becomes 175.2
• Question 7

Work out:

10.123 x 100

1012.3
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 10.123 becomes 1012.3
• Question 8

Work out:

0.123 x 100

12.3
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 0.123 becomes 12.3
• Question 9

Work out:

42.3 x 100

4230
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 42.3 becomes 4230
• Question 10

Work out:

0.03 x 10

0.3
EDDIE SAYS
When we multiply numbers by 100, each digit must move two places to the left. 0.03 becomes 0.3
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

### 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