Unit 4 Test Review

Front

What is the equation represented by the model: Sam had some books and then received 3 more as a gift. Now he has a total of 12 books?

Back

b + 3 = 12

Front

Simplify the expression: −15 − (−5)

Back

-10

Front

What is the verbal statement that represents the expression 3x - 10?

Back

Ten less than three times a number

Front

Which equation does the model below represent? -2 + 7 = 5, -7 + 2 = -5, 2 + (-7) = -9, 7 + 2 = 9

Back

-7 + 2 = -5

Front

Simplify the expression: |-4| - 6

Back

-2 (represented by point B on the number line)

Front

What does the absolute value of a number represent?

Back

The distance of that number from zero on the number line.

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What is the process of simplifying an expression?

Back

Combining like terms and reducing the expression to its simplest form.

Front

What does it mean to solve an equation?

Back

Finding the value of the variable that makes the equation true.

Front

What is the definition of an equation?

Back

A mathematical statement that asserts the equality of two expressions.