Name:    Multiplying and Dividing Rational Numbers

Multiple Choice
Identify the choice that best completes the statement or answers the question.

1. a. b. c. d. 2. a. b. c. d. 3. a. b. c. d. 4. a. c. b. d. 5.

Piotr ate of a pie. Sara ate of what was left of the pie. How much of the pie is left?
 a. b. c. d. 6.

The temperatures at Prince Albert, SK, at 12 noon on January 1, from 2000 to 2009 are shown in the table. Determine the mean termperature at 12 noon on January 1 for these years.

 Year Temperature (°C) 2000 -19.4 2001 -11.5 2002 -17.9 2003 -16.2 2004 -16.3 2005 -21.6 2006 -2.5 2007 -11.3 2008 -15.6 2009 -21.4

 a. -21.46 ºC b. -15.37 ºC c. -11.41 ºC d. -16.25 ºC

7.

The daily change in selling price for shares in Digitech Inc. during a week were +\$2.41, -\$1.74, -\$0.85, +\$1.05, -\$2.73, -\$0.87, and -\$1.96. What was the mean daily change in selling price during this week?
 a. +\$1.32 b. -\$2.01 c. -\$0.67 d. +\$0.72

8.

If x = 1.6 and y = -3.2, evaluate  -2y(x + y).
 a. 30.72 b. 3.12 c. -6.48 d. -10.24

9.

If and , evaluate .
 a. b. c. 2 d. 10.

If and , evaluate x ÷ y.
 a. b. c. d. 