# Combining and partitioning numbers within 10

I can use my knowledge of combining and partitioning numbers within 10 when solving problems.

# Combining and partitioning numbers within 10

I can use my knowledge of combining and partitioning numbers within 10 when solving problems.

## Lesson details

### Key learning points

- We can combine two parts to make a whole. Part + part = whole
- We can partition a whole into two parts.
- We can partition a part from a whole. Whole − part = part

### Common misconception

Children might record that numbers can only be partitioned in one way.

Children here have the chance to explore how numbers can be partitioned in many different ways. Narrate when exploring these different ways throughout, using ___ is the whole, ___ is a part and ___ is a part.

### Keywords

Combine - To join or merge two or more parts together.

Partition - The act of splitting an object or value into smaller parts.

Whole - All of a group or number.

Part - A piece or section of the whole.

### 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

40

49

50

39

4 + 2 =

40 + 20 =

7 + 3 =

70 + 30 =

16

10

15

14

6

5

9

7

8

8

4

10

6

## Exit quiz

### 6 Questions

the number of triangles

the number of squares

part

whole

part

6 rectangles

4 rectangles

7 rectangles

5 rectangles