# Maths Formula Sheet

A Formula sheet on maths...

hope its useful.

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• Created by: Rezwana
• Created on: 13-03-11 14:41
Word Document 30.91 Kb

## Pages in this set

### Page 1

GCSE Maths Formula Sheet

Rules of Indices
Rule 1: When you multiply indices of the same number you add the powers.

For example: 54x 53= 54+3= 57

Rule 2: When you divide indices of the same number you subtract the powers.

For example:

Rule 3: Indices outside a bracket multiply.…

### Page 2

nth term = dn + (a d)

For example: 6, 11, 16, 21, ... for this sequence d = 5, a = 6

Angle Formulae
Rule 1: Angles around a single point add up to 360°.

Rule 2: Angles on a straight line add up to 180°.

Rule 3: Vertically…

### Page 3

Rightangled Triangle: Area = ½ x Base x Height

Other Triangle: Area = ½ x Base x Perpendicular Height

Circle: Area = r2

Trapezium: Area = Average of Parallel sides x Distance between them

Surface Area
Curved Surface of a Cylinder: Area = 2 rh

Surface of a Sphere: Area…

### Page 4

Graphs
The equation of a straight line is y = mx + c

Quadratic functions are written in the form y = ax2 + bx + c

Cubics are in the form y = ax3 + bx2 + cx + d

In a pie chart, to find…