Simple formulae
Understand and use standard mathematical formulae; rearrange formulae to change the subject, performing inverse operations to isolate a different variable
Typical age: 12–14 years
“If a formula gives speed as distance ÷ time, can your child rearrange it to find distance or time when they're the unknowns instead?”
0 / 3 mastered
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Needs first
- Solving Linear EquationsREQUIRED
Rearranging formulae uses the same inverse-operation techniques as solving equations
- Substituting into FormulaeREQUIRED
Rearranging formulae requires fluent substitution to verify results
- Using inverse operationsREQUIRED
Rearranging formulae to change the subject is an application of inverse operations to algebraic expressions
Unlocks next
- Types of angles (age 13+)
Rearranging a² + b² = c² to find a shorter side uses formula rearrangement
- Plotting Linear Graphs
Rearranging to y = mx + c form uses formula rearrangement skills
- Trigonometry basicsREQUIRED
Using trig ratios to find unknowns requires formula rearrangement
- Compound Units
Rearranging compound unit formulae (speed = distance/time) uses formula rearrangement skills