Formulae (AQA GCSE Maths): Flashcards

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Formulae
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Definition of a formula

Mathematical rule showing relationship between quantities

Plural of formula

Formulae

What substitution means in formulae

Replacing letters (variables) with actual numbers

BIDMAS stands for

Brackets, Indices, Division, Multiplication, Addition, Subtraction

First step in BIDMAS order

Brackets

Second step in BIDMAS order

Indices (powers)

Most common BIDMAS error to avoid

Not multiplying before adding or subtracting

Triangle area formula (algebraic)

A=12bhA = \frac{1}{2}bh

Trapezium area formula

A=12(a+b)hA = \frac{1}{2}(a + b)h

When to substitute values in formulae

Before starting any calculations

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