New
New
Year 4

# Solve problems involving adjacent multiples of nine

I can solve problems involving adjacent multiples of nine.

New
New
Year 4

# Solve problems involving adjacent multiples of nine

I can solve problems involving adjacent multiples of nine.

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## Lesson details

### Key learning points

1. Adjacent multiples of nine have a difference of 9 and alternate between odd and even numbers.
2. If you add 9 to a multiple of nine you get the next multiple of nine.
3. If you subtract 9 from a multiple of nine you get the previous multiple of nine.

### Common misconception

Pupils may find it difficult to solve problems or misunderstand questions.

Model clearly how to identify key phrases and words which will identify the operation and equation required for word problems. This could involve drawing bar models or other representations.

### Keywords

• Adjacent multiple - An adjacent multiple is a multiple next to another. It could be before or after.

By this point fluency in 9 times tables will support children in solving these problems. Continue to chorally rehearse the 9 times tables.
Teacher tip

### 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 multiple of 9 is missing from this sequence? 45, , 63, 72
Q2.
What is 12 × 9 =
Q3.
Which symbol goes in the gap to make this correct? 9 × 9 = 10 × 9 ___ 9
+
×
÷
Q4.
Which symbol goes in the gap to make this correct? 2 × 9 = 3 × 9 ___ 9
+
×
÷
Q5.
Complete: I know that 3 × 9 = 27 so 30 × 9 =
Q6.
Complete: I know that 5 × 9 = 45 so 50 × 9 =

## Exit quiz

### 6 Questions

Q1.
Lucas makes shapes using 9 sticks each time. He has made 3 shapes and used 27 sticks. Lucas makes another of the shapes. How many sticks has he used now?
27
28
30
Q2.
There are 7 flowers with 9 petals each. If Jun gives away one flower, how many petals will there be altogether? petals