# Addition and subtraction within 10

I can use my knowledge of addition and subtraction within 10 when solving problems.

# Addition and subtraction within 10

I can use my knowledge of addition and subtraction within 10 when solving problems.

## Lesson details

### Key learning points

- Part + part = whole
- Whole − known part = unknown part

### Common misconception

Children may misrepresent a given problem meaning they are led to calculate the solution incorrectly.

Children may identify the solution quickly when working with smaller numbers, but it is still important they are encouraged to visualise and represent each problem so that they know how to reveal the structure of the maths in more complex problems.

### Keywords

Part - A piece or section of the whole.

Whole - All of a group or number.

Unknown - An unknown is a quantity that has a set value but it is represented by a symbol or letter.

Known - A given value.

### 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

there were six pencils in a pot

2 pencils were taken out of the pot

there are 4 pencils in the pot

5

1

4

2

3