# Explain how to balance equations with addition and subtraction expressions

You can explain how to balance equations with addition and subtraction expressions

# Explain how to balance equations with addition and subtraction expressions

You can explain how to balance equations with addition and subtraction expressions

## Lesson details

### Key learning points

- If one addend is increased and the other is decreased by the same amount, the sum stays the same.
- If the minuend and subtrahend are changed by the same amount, the difference stays the same.

### Common misconception

Thinking that you can change the values of subtraction and addition expressions by making the same changes.

Go back and explore what happens when you change different elements of addition and subtraction equations. Use stem sentences from earlier learning to highlight what happens to the sum and difference when values are changed in equations.

### Keywords

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

Expression - An expression contains one or more terms or numbers, where each term or number is separated by and operator but an expression does not have an equals sign.

### 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

Loading...

## Starter quiz

### 6 Questions

## Exit quiz

### 6 Questions

390 − 130

400 − 130

410 − 130

420 − 130