# Substitution & formulae resources

### Quick Reference (3)

Rearranging formulas 1

This leaflet explains how simple formulae are rearranged. (Engineering Maths First Aid Kit 2.10)

Rearranging formulas 2

This leaflet explains how formulae can be rearranged. (Engineering Maths First Aid Kit 2.11)

Substitution

This leaflet revised the way in which symbols in formulas are replaced by actual numerical values - a process known as substitution. You will need a calculator to check these examples.