# Using balanced equations to calculate redistribution

I can use balanced equations to calculate redistribution.

# Using balanced equations to calculate redistribution

I can use balanced equations to calculate redistribution.

## Lesson details

### Key learning points

- If one part is increased and the other is decreased by the same amount, the whole stays the same.
- If one part is decreased and the other is increased by the same amount, the whole stays the same.
- Redistributing between parts with the whole staying the same is sometimes known as the 'same sum' rule.

### Common misconception

The brackets are intended to make it easier for pupils to distinguish between different parts of the expression. Brackets are unfamiliar to learners so may cause errors.

If the brackets lead to confusion then remove them and use colour or some other signifier. Pupils needs to be able to see, understand and analyse any changes through redistribution.

### Keywords

Whole - The whole is all the parts or everything, the total amount.

Part - A part is a piece or section of the whole.

Equation - An equation is used to show that one number, calculation or expression is equal to another.

Expression - An expression contains one or more values, where each value is separated by an operator.

### 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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