Algebra is a language that uses letters, symbols, and numbers to express relationships. In order to **write algebraic expressions** it helps to know the key words and their algebraic definition. Learning these key terms helps one to write and read an algebraic expression that includes a variable. Remember a variable is simply a letter that takes the place of a number.Here is a list of the common key words to used in Algebra.

## Examples of Writing Algebraic Expressions

**Example Problem 1 Examples of Algebraic Expressions**

Rewrite the ratio of x and 4 into an algebraic expression.

Ratio means division so …. it becomes x÷4 or x⁄4

**Example Problem 2 Writing Algebraic Expressions**

How would you rewrite 5 less than a number in an algebraic expression?

The less than equals subtraction so it becomes ……… x-5

**Example Problem 3 Algebraic Expressions Examples**

Rewrite 24 per 3 acres into an algebraic expression.

per equals division so it becomes…. 24 ÷3=