New
New
Year 3

# Use knowledge of the relationship between the 2, 4 and 8 times tables to solve problems

I can use the relationship between the 2, 4 and 8 times tables to solve problems.

New
New
Year 3

# Use knowledge of the relationship between the 2, 4 and 8 times tables to solve problems

I can use the relationship between the 2, 4 and 8 times tables to solve problems.

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## Lesson details

### Key learning points

1. If you double the multiples of 2 you get the multiples of 4
2. If you double the multiples of 4 you get the multiples of 8
3. If you double the multiples of 2 and double again you get the multiples of 8

### Common misconception

Pupils may misunderstand the contexts or language within worded problems and therefore not understand the calculation required to solve.

Model clearly how to identify key phrases and words which will identify the operation and equation required for word problems. Pupils may benefit from representing what is known and what is unknown such as by drawing a bar model.

### Keywords

• Multiple - A multiple is the result of multiplying a number by another whole number.

• Double / doubling - To double means to become twice as many or to multiply by two.

• Halving - Halving means to divide into two 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).

## Starter quiz

### 6 Questions

Q1.
Which numbers are multiples of both 2, 4 and 8?
29
30
36
Q2.
Which numbers are multiples of 2 and 4 but not multiples of 8?
2
8
16
Q3.
Match the groups of 8 to the equal groups of 2
Correct Answer:3 groups of 8,2 × 12

2 × 12

Correct Answer:2 groups of 8,8 × 2

8 × 2

Correct Answer:4 × 8,16 groups of 2

16 groups of 2

Correct Answer:5 × 8,20 groups of 2

20 groups of 2

Q4.
Thinking about multiples of 2, 4 and multiples of 8, match the creatures to the number of legs.

16 legs

48 legs

40 legs

48 legs

20 legs

Q5.
Which statements are true and which are false?
Correct Answer:True,Multiples of 8 are double a multiple of 4

Multiples of 8 are double a multiple of 4

Correct Answer:True,If you half a multiple of 8 you always get a multiple of 4

If you half a multiple of 8 you always get a multiple of 4

Correct Answer:False,All multiples of 2 are also multiples of 8

All multiples of 2 are also multiples of 8

Correct Answer:False,An odd number multiplied by 2 is a multiple of 4

An odd number multiplied by 2 is a multiple of 4

Correct Answer:True,Double a multiple of 2, then double again, gives a multiple of 8

Double a multiple of 2, then double again, gives a multiple of 8

Q6.
Look at the bar model. Which statement below is true?
Correct answer: 2 × 8 = 4 × 4 = 8 × 2
2 × 8 = 4 × 4 = 4 × 2
4 × 8 = 4 × 4 = 4 × 2
8 × 8 = 4 × 4 = 4 × 2

## Exit quiz

### 6 Questions

Q1.
This image shows that 2 × 8 = 1 × 16 = 4 ×
Q2.
Doubling multiples of 2 gives multiples of 4 Use this knowledge to match the statements to the correct product.
Correct Answer:5 × 2 = 10 so 5 × 4 =,20

20

Correct Answer:7 × 2 = 14 so 7 × 4 =,28

28

Correct Answer:9 × 2 = 18 so 9 × 4 =,36

36

Correct Answer:6 × 2 = 12 so 6 × 4 = ,24

24

Q3.
Doubling multiples of 2 and doubling again gives you multiples of 8 Use this knowledge to match the statements to the correct product.
Correct Answer:8 × 2 = 16 so 8 × 8 =,64

64

Correct Answer:2 × 3 = 6 so 8 × 3 = ,24

24

Correct Answer:2 × 5 = 10 so 8 × 4 =,32

32

Correct Answer:6 × 2 = 12 so 6 × 8 =,48

48

Q4.
Watermelons are sold in boxes of four or eight. Andeep wants to buy six boxes of four watermelons. How many boxes of eight watermelons could he buy instead? boxes.
Q5.
Izzy has baked 24 cupcakes. How many boxes would she need if one box holds 4 cakes? boxes