Name: ______Date: ______Academic: _

Chapter 3: Positive and Negative Numbers Review

Adding and Subtracting:

1) / 2) / 3)
4) / 5)The highest point on earth is Mt. Everest at 29,028 feet. The lowest point on earth is on Antarctica at 8,327 feet below sea level. Determine the difference between the highest and lowest points on earth. / 6)If the temperature was and then warmed, what is the temperature?
7)The latest thrill ride at a popular theme park takes roller coaster fans on an exciting ride. In the first 20 seconds, it carries its passengers up a 100-meter hill, plunges them down 72 meters, and quickly takes them back up a 48-meter rise. How much higher or lower from the start of the ride are they after these 20 seconds? / 8)Which expressions are equivalent to9−10+3?
Select all that apply.
  1. 9 + (-10) + 3
  2. -3 + 14 – 7
  3. -8 + 7 + 3
  4. -8 – (-11) + (-1)
  5. 14 – 7 – 3
  6. 9 – (10 + 3)
/ 9)On Monday the temperature was−20degrees. On Tuesday the temperature was42degrees. Which of thefollowingrepresent the change in temperature from Monday to Tuesday?
Select all that apply.
  1. |42 – (-20)|
  2. |42 – 20|
  3. |20 – 42|
  4. |-20 – 42|
  5. |-20 – (-42)|

10)While watching a football game, Lin Chow decided to list yardage gained as positive integers and yardage lost as negative integers. After these plays, Lin recorded 14, –7, and 9. What was the net gain or loss? Draw a number line model to represent this problem.

11)The table below shows the average temperature in a region for five days. What is the average temperature change from Thursday to Friday?
/ 12)Brandy is adding two numbers using a number line. She starts at 15 on the number line and stops counting at -7 on the number line. What number did Brandy add to 15?

Multiplication and Division:

13) / 14) / 15)Jamie spent $12 a day on food for 6 days. What was Jamie’s overall change in her bank account for food over the 6 days?
16) / 17) / 18)Suppose the temperature outside is dropping 3 degrees eachhour. How much will the temperature change in 8 hours?
19)Which expressions have products that are positive?
Select all that apply.
  1. (-5)(0.2)(-9)
  2. (6)(-3)(8)(-7)
  3. 1.2)(-3.5)(2.7)(-0.8)
/ 20)Hiking up a mountain, you notice that the air temperature drops 10°C for every 1,000 meters increase in elevation. Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3,000 meters. Then evaluate the expression and explain its meaning. / 21)The table below shows the weight in pounds of large adult males in the cat family.
Cat / Weight
Cheetah / 143
Cougar / 227
Leopard / 200
Lion / 550
Tiger / 400
a.What is the mean weight of these cats?
b. What is the mean weight of the two largest cats?