Formulae (Edexcel 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 are variables in formulae

Letters representing unknown values or measurements

Definition of substitution

Replacing letters in a formula with actual numbers

BIDMAS acronym meaning

Brackets, Indices, Division, Multiplication, Addition, Subtraction

In BIDMAS, which comes first: multiply or add?

Multiply

Formula for area of a triangle

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

Three key steps for substitution

Write formula, substitute values, calculate using BIDMAS

First step before calculating with a formula

Write out the formula first

Why show each step clearly in exam working

Reduces errors and gains method marks

Turkey cooking time formula (weight in kg)

Time = Weight × 30 + 45

In BIDMAS, how to do Division and Multiplication

Left to right

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