Evaluate Expressions

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 the variables with given numbers and performing the operations.

Front

Evaluate the expression when m = 5: m² + 4

Back

29

Front

What is the order of operations in mathematics?

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) - often remembered as PEMDAS.

Front

Evaluate the expression: 4 + 2 x 7

Back

18

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

Evaluate 4 + y if y = 3

Back

7

Front

What is the result of 5 x (6 - 3)?

Back

15

Front

What is a variable in an expression?

Back

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

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, such as numbers like 5, -3, or 0.