Evaluate Expressions

Front

Evaluate -2x + -3y if x = 10 and y = -6

Back

-2

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

Evaluate m² + 12q if m = 5 and q = -3

Back

-11

Front

Evaluate 7y - 3y for y=2

Back

8

Front

Evaluate 4y if y = 3

Back

12

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 the variables with given 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 determines 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 x in the expression 3x + 4 = 10?

Back

x = 2