Evaluating Expressions

Front

Evaluate x ÷ 4 if x = 80

Back

20

Front

Evaluate b² + 3 if b = 9

Back

84

Front

Evaluate 3d if d = 5

Back

15

Front

Evaluate 4w - 3y if w = 7 and y = 6

Back

10

Front

Evaluate m - n if m = 29 and n = 11

Back

18

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 (often a letter) that represents an unknown value.

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).

Front

What is the value of 2x if x = 10?

Back

20