Variables+and+Arithmetic+Operators

You have already learned that a variable is used to represent a value which can change.

An arithmetic operator is an operator which can be used in maths e.g.
 * Add (+)
 * Subtract (-)
 * Multiply (*)
 * Divide (/)
 * Power of (^)

Arithmetic operators are used with numbers and variables as shown in the following exercises:

Doubled

Friends' Ages

Super Cinema

Design your own program

Extension programs
Circumference

Area and Circumference