Name: ______Date: ______Period:______

Unit 1 – Operations with Rational Numbers

1) Place the following numbers in order from least to greatest:

2/5, -.20, -2/5, .44, -.44

______, ______, ______, ______, ______,

2) Name the opposite of each:

16 _____-5 _____0 _____

3) Write the >, <, or = sign.

-6 _____ -9 -5 _____ -4 -18 _____ -7 -14 _____ -13

4) Find the absolute value.

|8| = _____ |-14| = _____ |-3| = _____ -|9| = _____ -|-7| = _____

Solve.

11) The temperature at noon on a winter day was 8o C. At midnight, the temperature had dropped 15o. What was the temperature at midnight?

12) In 2001, Standard Register reported a net loss of $43 million. In 2002, the company had a net income of $33 million. How much more money did the company make in 2002 than in 2001?

13) Karen borrowed $75 from her parents. She paid back $37, but borrowed $12 more. How much does she still owe?

14) An architectural drawing of a building shows the elevation of the basement floor to be –12 feet. The elevation of the roof is 32 feet. What is the total distance from the roof to the basement floor?

15) Rita had $117 in her checking account before she wrote a check for $123. What is her new balance?

16) The high temperatures for the first 5 days of January in Fargo, North Dakota are listed below. Find the average high temperature for these 5 days.

Jan. 1 – 2o

Jan. 2 4o

Jan. 3 -10

Jan. 4 6o

Jan. 5 3o

17) A football team gained 2 yards on a first down, lost 11 yards on the second down, and gained 7 yards on the third down. How many yards do they need to gain on the fourth down to have a 10 yard gain from their starting position?

18) While returning to the glider port, Lucy descended for four minutes at a rate of 200 feet per minute. How much altitude did she lose? If her starting altitude was 2200 feet, what was her final altitude?

19) Carla’s credit card statement showed that she owed $350. She made a payment of $200, then she charged $23 for gasoline. What is her new balance?

20) An elevator picked up passengers on the 10th floor and descended 7 floors before letting them off. On what floor did the passengers exit the elevator?

Properties

Name the property shown. Choose from commutative, distributive,associative, multiplicative identity, additive identity, and zero properties.