Evaluate Expressions

Front

Evaluate when a = 15: 2(a - 5) + 2

Back

22

Front

Evaluate m² – 15 when m = 8

Back

49

Front

Evaluate 7 + j if j = -2

Back

5

Front

Evaluate -2x if x = 10

Back

-20

Front

Evaluate 3x + 8 if x = 2

Back

14

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 a variable?

Back

A variable is a symbol (like x or y) 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 value of x in the expression 5x + 3 = 18?

Back

x = 3