Evaluating Expressions

Front

Evaluate c² - 11 if c = 8

Back

53

Front

Evaluate x ÷ 4 if x = 80

Back

20

Front

Evaluate b² + 4 when b = 3

Back

13

Front

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

Back

22

Front

Evaluate 6a - 3d when a = 1, d = 2

Back

0

Front

What is an expression in mathematics?

Back

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

Front

What does it mean to evaluate an expression?

Back

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

Front

What is a variable in mathematics?

Back

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

Front

What is the order of operations?

Back

The order of operations is the rules that define the correct sequence to evaluate a mathematical expression: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is the value of 3²?

Back

9