# Substitute (Maths)

## Contents

## Key Stage 3

### Meaning

To **substitute** is to replace part of a formula or equation with a number or another formula.

### About Substituting

- When answering questions that involve an equation the numbers from the question are
**substituted**into the equation.

## Key Stage 4

### Meaning

To **substitute** is to replace part of a formula or equation with a number or another formula.