Evaluate Expressions

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. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Evaluate the expression: 18 - 8 ÷ 2

Back

14

Front

Evaluate the expression when m = 5: m² + 4

Back

29

Front

What does 3² mean?

Back

3 x 3

Front

Evaluate the expression: 4 + 2 x 7

Back

18

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

What is a variable in mathematics?

Back

A variable is a symbol (often a letter) that represents a number that can change or vary.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for variables and performing the operations.

Front

What is the result of 5 + 3 x 2?

Back

11 (because multiplication is performed before addition).

Front

What is the value of x if 3x = 12?

Back

4 (by dividing both sides by 3).