Evaluating Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 2x + 3 is an algebraic expression.

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 b² + 4 when b = 3.

Back

13

Front

Evaluate x - 20 when x = 3.

Back

-17

Front

Evaluate 6a - 3d when a = 1 and d = 2.

Back

0

Front

Evaluate 19 + h when h = -6.

Back

13

Front

Evaluate x² when x = -2.

Back

4

Front

What is the value of a variable in an expression?

Back

The value of a variable in an expression is the number that replaces the variable when evaluating the expression.

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). Often remembered by the acronym PEMDAS.

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an algebraic expression. For example, in 4x, 4 is the coefficient.