Evaluate Expressions

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

Evaluate 7 + j if j = -2

Back

5

Front

Evaluate m² – 15 if m = 8

Back

49

Front

Evaluate (s – 5)² if s = 13

Back

64

Front

Evaluate -2x if x = 10

Back

-20

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?

Back

A variable is a symbol (like x or r) that represents an unknown value in an expression or equation.

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 square of a number?

Back

The square of a number is the result of multiplying that number by itself.