# Use knowledge of doubling, halving and the 2 times table to solve problems

I can use knowledge of doubling, halving and the 2 times table to solve problems.

# Use knowledge of doubling, halving and the 2 times table to solve problems

I can use knowledge of doubling, halving and the 2 times table to solve problems.

## Lesson details

### Key learning points

- Doubling is a multiplication where one of the factors is 2
- When one of the factors is 2, the other factor is half of the product.
- Doubles facts to 5 can help to double and halve 2-digit numbers.

### Common misconception

Children may revert to inefficient strategies to solve problems e.g. counting on, using fingers.

Within the second learning cycle, children are encouraged to evaluate strategies used by others. The most efficient strategies should be discussed together throughout the first learning cycle to support with this.

### Keywords

Double / Doubling - To become twice as many / to multiply by two.

Half / Halving - One of two equal parts of a whole / To divide into two equal parts.

Check - To evaluate working, ensuring our response provides an answer to the given problem.

### 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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## Starter quiz

### 6 Questions

6

10

7

20

## Exit quiz

### 6 Questions

24

60

18

30

Half of 28 is equal to 14

Half of 14 is equal to 7

Half of 26 is equal to 13

Half of 80 is equal to 40

9

20

11

13