Evaluate Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables (like x or y), and operations (like addition, subtraction, multiplication, and division).

Front

What does it mean to evaluate an algebraic expression?

Back

To evaluate an algebraic expression means to substitute the values of the variables into the expression and perform the operations to find a numerical result.

Front

Evaluate the expression: 0.2t when t = 1.6

Back

0.32

Front

Evaluate the expression: (x + y) ÷ 2 when x = 14 and y = 6

Back

10

Front

Evaluate the expression: 8a - b when a = 10 and b = 6

Back

74

Front

Evaluate the expression: 4y when y = 3

Back

12

Front

Evaluate the expression: 28/m when m = 4

Back

7

Front

What is the value of x in the expression 5x = 25?

Back

5

Front

What is the order of operations used in evaluating expressions?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often remembered by the acronym PEMDAS.

Front

What is a variable in algebra?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation.