Evaluate Expressions

Front

Evaluate expression if a=3 and b=4: 4b - 5a

Back

1

Front

Evaluate the expression: x + 12 when x = 2.2

Back

14.2

Front

(9 + 23) ÷ (5 - 3) = ?

Back

16

Front

b² + 4 when b = 3

Back

13

Front

If x = 3 solve x + 4 = ?

Back

7

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 the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - often remembered as PEMDAS.

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 value of 2x when x = 5?

Back

10