Pre Algebra Test Study

Front

Write an expression for the difference of 27 and a 3 times number.

Back

27 - 3n

Front

Evaluate 4 ⋅ (2n + 4) + 3m if n = 2 and m = 4.

Back

44

Front

Write an expression for the product of 10 and a number.

Back

10n

Front

Simplify -4 + 4 - 30 ÷ 3.

Back

-10

Front

Simplify 1 + 5 - 4.

Back

2

Front

What is an expression?

Back

A combination of numbers, variables, and operators (like +, -, ×, ÷) that represents a value.

Front

What is a variable in algebra?

Back

A symbol (usually a letter) that represents an unknown value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting numbers for the variables.

Front

What is the order of operations?

Back

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 difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.