## Algebraic Expressions and Variables

## Formative Assessment

# Algebraic Expressions and Variables

**Read and Discuss**

- In algebraic expressions, letters stand for numbers. You can use any letter to represent an unknown value. A letter used in place of a number in an expression is called a
*variable*. - Words can be used to describe algebraic expressions.
- An algebraic expression combines both numbers and letters using the arithmetic operations of addition (+), subtraction (โ), multiplication (โ ), and division (รท) to express a quantity.

## Hint:

Can you:

- Describe how letters are used in algebraic expressions?
- Describe what elements might be included in an algebraic expression?