Variables in math are symbols, often letters, that represent different values in various situations. They help us understand and solve problems with changing values.

A variable is a symbol that represents a value, often one that changes, like how long you've been awake. Learn ways that we can change an expression's value (such as by changing the values of its …

Practice Writing basic expressions with variables Get 5 of 7 questions to level up!

Variables in math are symbols, often letters, that represent different values in various situations. They help us understand and solve problems with changing values.

Expressions are combinations of variables and numbers, while equations equate two expressions. Variables can take on different values depending on the context, and we can evaluate expressions …

The number of questions you get right is the independent variable, and that's driving the number of points you score. So the number of points you score is the dependent variable.

On a math quiz, Tatiana earns 5 points for each question she answers correctly. She wrote this equation to find how many points she earns (p) based on how many questions she answers correctly (q) :

Learn to write expressions with variables in math! Discover how to represent various operations like addition, subtraction, multiplication, and division using variables.

In algebra, x is the most frequently used variable and we don't want to confuse this variable with the ordinary multiplication symbol (which is x or X). So once we go beyond arithmetic into algebra, we …

We introduce independent and dependent variables: how to identify the independent/dependent variable in a given setting, and how we write equations with the dependent variable by itself. Created by Sal …