Evaluating Expressions

Front

Evaluate 3d if d = 5

Back

15

Front

Evaluate 3x - 7 if x = 6

Back

11

Front

Evaluate y + 17 if y = 11

Back

28

Front

100 - 5² = ?

Back

75

Front

25 − 5² ÷ 5 = ?

Back

20

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) 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 and performing the operations.

Front

What is the order of operations?

Back

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

Front

What is a variable in mathematics?

Back

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

Front

What is the value of 2x + 3 when x = 4?

Back

11