Evaluating 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

How do you evaluate an algebraic expression?

Back

To evaluate an algebraic expression, substitute the values of the variables into the expression and then perform the operations according to the order of operations (PEMDAS/BODMAS).

Front

What does the term 'variable' mean in algebra?

Back

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

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Evaluate the expression: 3x when x=5.

Back

15

Front

Evaluate the expression: 10B + 3 when B=12.

Back

123

Front

Evaluate the expression: 5J + 5 + J when J=5.

Back

35

Front

Evaluate the expression: 8L + 100 when L=7.

Back

156

Front

Evaluate the expression: 3R + 2 when R=2.

Back

8

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an algebraic expression.