# Use efficient strategies to multiply numbers, including decimals

## Lesson details

### Key learning points

1. In this lesson, we will evaluate what strategies are most efficient for various multiplication problems.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 5 Questions

Q1.
If I know 7 x 5 = 35, what is 70 x 50?
350
35000
Q2.
If I know 8 x 7 = 56, what is 0.8 x 70?
0.56
5.6
560
Q3.
In Mexico £1 is worth 25 Pesos. How many Pesos would you receive for £12?
200 Pesos
250 Pesos
350 Pesos
Q4.
In Brazil £1 is worth 6 Real. How much Real would you receive for £500?
30 Real
30,000 Real
300 Real
Q5.
In Japan £1 is worth 150 Yen. How much Yen would you receive for £50?
5000 Yes
6500 Yen
7000 Yen

## Exit quiz

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### 5 Questions

Q1.
What is 675 x 7?
4565
4710
4825
Q2.
What is 455 x 9?
3095
3595
4595
Q3.
Find the product of 4.5 and 16
108
84
96
Q4.
Find the product of 6.25 and 24
100
125