Explain the relationship between adjacent multiples of 2 | Maths

Starter quiz

Look at the image below. There are ______ groups of £2

'2' ✓
There are eight two pence coins. The total value is ______ p.

'16' ✓
There are ten two pence coins. The total value is ______ p.

'20' ✓
Look at the image below. Using your knowledge of groups how can you change this to 5 groups of 2?

Add 1 plate of 2 cakes.

Add a cake to each plate.

Subtract 1 plate of 2 cakes. ✓

Subtract 5 cakes.
Aisha has 20 pencils. How many groups of 2 is this?

'10' ✓
Aisha has £16 altogether. How many £2 coins does she have?

'8' ✓

Exit quiz

Look at the number sequence. ___, 14, 16 To find the previous multiple of 2 you must ________ 2

add

subtract ✓

multiply
Look at the number sequence. 12, 14, ___ To find the missing next multiple of 2 you must ________ 2

add ✓

subtract

multiply
The next multiple of 2 from 20 is: 20, ______

'22' ✓
The missing previous multiple of 2 is: ______, 10, 12

'8' ✓
Aisha counts eyes. She knows that 12 children will have 24 eyes altogether. How many eyes will there be altogether if there are 11 children?

24

22 ✓

20

18
Match the expressions so that they are equal.

2 × 2

⇔

1 × 2 + 2 ✓

3 × 2

⇔

2 × 2 + 2 ✓

4 × 2

⇔

5 × 2 − 2 ✓

5 × 2

⇔

6 × 2 − 2 ✓

Worksheet

Loading worksheet ...

Presentation

Loading presentation ...

Video

Lesson Details

Key learning points

Adjacent multiples of 2 have a difference of 2
If you add 2 to a multiple of 2 you get the next multiple of 2
If you subtract 2 from a multiple of 2 you get the previous multiple of 2

Common misconception

Pupils may find worded problems related to adjacent multiples challenging if they are not clear on the structure of finding previous and next multiples.

Model correct usage in a range of contexts including labelling abstract equations and using the term to identify the known elements in worded problems. Take time to show adjacent on number lines connecting to addition and subtraction of equal groups.

Keywords

Previous - Occurring before in time or order.
Next - Occurring after in time or order.