Thursday, February 9, 2012

Variable's and Expressions

What is a variable?

A variable is a letter that represents an unknown number.
eg. X, A, N.

What is an expression?

An expression is any single number or variable or combination of operations ( Subtraction, addition, multiplication and division) involving numbers and variables.
eg. 5, n, 8t, x+1, 2y-7.

Here is a link to help you if you are still having troubles with variables and expressions:


1 comment:

  1. Good Job Jess! I like how you gave us a link that you think might help us understand what an Expression and Variable is. What I suggest next time is for you to make a picture.