PreAlgebra Review

Front

What is the result of taking 10 away from a variable s?

Back

s - 10

Front

Evaluate the expression 4b - 5a if a=3 and b=4.

Back

1

Front

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

Back

-2

Front

Calculate -15 + 5 + 20.

Back

10

Front

Back

Front

What is the definition of a variable in algebra?

Back

A symbol used to represent an unknown value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of the expression by substituting variables with numbers.

Front

What is the order of operations in mathematics?

Back

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - PEMDAS.

Front

Back

4

Front

What is the definition of an expression in algebra?

Back

A combination of numbers, variables, and operators without an equality sign.