Writing Formulae Flashcards

GCSE Mathematics (Edexcel) 1MA1

Formula

A mathematical rule or relationship expressed using symbols.

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Terms in this set (10)

1

Formula

A mathematical rule or relationship expressed using symbols.

2

Variable

A symbol, usually a letter, that represents an unknown value in a formula.

3

Expression vs Formula

An expression is a mathematical phrase without an equals sign, while a formula includes an equals sign and shows a relationship between variables.

4

Substitution

Replacing variables in a formula with specific values to calculate a result.

5

Rearranging Formulae

The process of changing the subject of a formula by isolating a specific variable.

6

Example: Area of a Rectangle

A = l × w, where A is the area, l is the length, and w is the width.

7

Example: Speed Formula

Speed = Distance ÷ Time, where speed is the subject of the formula.

8

Example: Density Formula

Density = Mass ÷ Volume, where density is the subject of the formula.

9

Example: Rearranging Speed Formula for Time

Time = Distance ÷ Speed, rearranged to make time the subject.

10

Units in Formulae

Always ensure that the units used in a formula are consistent (e.g., metres for distance, seconds for time).

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