# CIE IGCSE Mathematics Formulas List for Extended Students

This file contains all the formulas you need to know for the CIE IGCSE mathematics extended exam. It covers all the formulas you need to know for the 2014 syllabus.

- Created by: Varshini
- Created on: 09-03-13 10:35

First 145 words of the document:

IGCSE Extended Mathematics Formulas

Sequences

nth term with one difference:

a = first number of the sequence

d = first difference

nth term with two differences:

C = second difference

/

Sum of arithmetic sequences:

Interests

Simple Interest: P or p = price

n = number of years

i or r = rate of interest

Compound Interest:

Algebra and Identities

Mensuration

Upper and Lower Bounds (Approximations)

Consider two quantities A and B

Addition: Subtraction

Upper bound = Max A + Max B Upper bound = Max A Min B

Lower bound = Min A + Min B Lower bound = Min A - Max B

Multiplication: Division

Upper bound = Max A Max B Upper bound = Max A Min B

Lower bound = Min A Min B Lower bound = Min A Max B

Percentages

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