Exam 2: Introduction to Real Numbers and Algebraic Expressions

Write the word or phrase that best completes each statement or answers the question. -Is this statement true or false? Why? (8 - 8) - 8 = 8 - (8 - 8)

Evaluate -(-x) for the given value of x. -x = 1.68

Divide, if possible. -

Add. Do not use a number line except as a check. --43 + 0

Collect like terms. --9 + 12m + 12n - 8m + 4n - 7

Insert < or > to write a true statement. -

Translate the phrase to an algebraic expression. -x subtracted from y

Solve the problem. -A stockbroker sold 80 shares of stock for $47.11 each. What was the total amount of the sale?

Subtract. --18 - (-6)

Simplify. -

Provide an appropriate response. -Choose the expression that is equivalent to the following: (3x + 4y)(4y + 8x)

Subtract. --7.1 - 12.9

Solve the problem. -The stock market gained 6 points on Tuesday and lost 49 points on Wednesday. Find the difference between these changes.

Solve the problem. -Wayne has $26.72 in his wallet. Janice has a debt note for $30.45 in her wallet. Find the difference between these amounts.

Insert < or > to write a true statement. -

Multiply. -

Divide, if possible. -

Evaluate -(-x) for the given value of x. -x = -67

Write the word or phrase that best completes each statement or answers the question. Use the commutative and/or associative laws to rewrite the given expression. Label each step with a reason. -(4w)5 as 20w

Add. Do not use a number line except as a check. -