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# Single Variable Expressions

## Use symbols and operations to understand and define variables.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
• Video

## Evaluating an Expression with Multiple Variables

by CK-12 //basic

Learn how to evaluate expressions with multiple variables.

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• Video

## Evaluating Variable Expressions

by CK-12 //basic

Provides two basic examples of evaluating a variable expression.

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• Video

## Evaluating Algebraic Expressions

by CK-12 //basic

Introduces how to evaluate algebraic expressions

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• Video

## Examples: Writing Variable Expressions

by CK-12 //basic

Presents three money-related examples of converting a real-life problem to a math equation.

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