Writing formulae (AQA GCSE Maths): Flashcards
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Practise the cards
10 cards from this deck
Definition of a formula
Definition of a formula
Mathematical rule showing relationship between quantities
Two ways to write formulae
Two ways to write formulae
Word formula and algebraic formula
How to choose letters for quantities in formulae
How to choose letters for quantities in formulae
Use first letter of quantity name where appropriate
What must be included when defining formula variables?
What must be included when defining formula variables?
Units (e.g., T is cooking time in minutes)
Simplified form of in a formula
Simplified form of in a formula
Formula: cooking time (25 min/kg + 30 min extra)
Formula: cooking time (25 min/kg + 30 min extra)
(T=time in min, w=weight in kg)
Formula: car hire £80 + 50p per mile
Formula: car hire £80 + 50p per mile
(C=cost in £, m=miles; 50p = £0.50)
Perimeter formula for regular hexagon (6 equal sides)
Perimeter formula for regular hexagon (6 equal sides)
(P=perimeter, s=side length)
Common mistake with different units in formulae
Common mistake with different units in formulae
Mixing units - must keep all quantities in same units
Where to keep units in algebraic formulae
Where to keep units in algebraic formulae
In definitions only, not in algebraic expression itself