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 expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given numbers.

Front

Evaluate m² if m = 5.

Back

25

Front

Evaluate the expression 19 + h when h = -6.

Back

13

Front

Evaluate b² + 4 when b = 3.

Back

13

Front

Evaluate 2(a - 5) + 2 when a = 15.

Back

22

Front

Evaluate x² + 2x - 1 when x = -3.

Back

2

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.