Evaluating Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

How many terms are in the expression 3x + 2y + z?

Back

3

Front

What does it mean to evaluate an expression?

Back

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

Front

Evaluate the expression b² + 4 when b = 3.

Back

13

Front

What is a variable in an expression?

Back

A variable is a symbol (like x or y) that represents an unknown value.

Front

Evaluate 4y if y = 3.

Back

12

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 4h + 2g + 4 when g = 3 and h = 9.

Back

46

Front

What is a term in an expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both multiplied together.

Front

Evaluate the expression z² - 2x when x = 5 and z = 4.

Back

6