New

New

Year 5

# Multiply tenths with whole numbers

I can use known multiplication facts and unitising to multiply tenths with whole numbers.

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New

New

Year 5

# Multiply tenths with whole numbers

I can use known multiplication facts and unitising to multiply tenths with whole numbers.

Share activities with pupils

Share function coming soon...

## Slide deck

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## Lesson details

### Key learning points

- There are 10 tenths in one whole.
- Unitising can help to multiply tenths by whole numbers.
- Multiplication of tenths can be represented as repeated addition of tenths.
- ‘___ times ___ ones is equal to ___ ones so ___ times ___ tenths is equal to ___ tenths’ supports us to multiply tenths.

### Common misconception

Children may incorrectly write the amount of tenths e.g. 49 tenths may be written as 0.49

There are ten tenths in one whole. So e.g. 49 tenths is composed of 4 ones and 9 more tenths. We write this as 4.9

### Keywords

Tenth - One-tenth is one part in ten equal parts.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

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## Starter quiz

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### 6 Questions

Q1.

Continue this sequence:
8 ones, 9 ones, 10 ones, ___ ones

Q2.

Match the equations to their sum.

9

10

8

16

18

Q3.

Match the factors to their product.

36

24

32

0

4

Q4.

0.5 cm = mm

Q5.

Match the equation to the missing factor.

7

3

6

9

8

Q6.

Which of these are multiples of six?

28

46

62

## Exit quiz

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### 6 Questions

Q1.

What comes next in this sequence? 0.8, 0.9, 1.0, ?

Q2.

How many tenths is 0.5 composed of?

Q3.

If 7 × 8 = 56, what does 7 × 0.8 equal?

560

56

0.56

Q4.

Match the equation to its answer.

3.6

2.5

2.1

0.1

0

Q5.

Lucas is making a line of marbles. Each marble is 0.8 cm long. How long could it be?

2.2 m

1.2 cm

Q6.

Sofia has a blue ribbon that is six metres long. She also has a red ribbon that is two-tenths times the length of the blue ribbon. How long is the red ribbon? m