Integers, Integers, Integers!!

Adding Integers

100

-9+(-7)=?

a. 16

b. -16

c. 2

d. -2

b. -16

200

14+ (-13)

1

300

17+5+(-6)

16

400

-19+7+(-9)

-21

500

20+(-15)+(-3)

2

Subtracting Integers

100

-17- (-5)

-12

200

-6 - (-3) - 6

-9

300

-10 - 7 - 2

-19

400

-20 - (-16)

-4

500

-21 - (-15) - 17

-23

Multiplying Integers

100

7 x -8

-56

200

-15 x -10

150

300

-8 x -8

64

400

6 x -3 x -2

36

500

10 x 9 x -2

-180

Dividing Integers

100

-10÷(-2)

5

200

50÷(-5) 

-10

300

-60÷(-5)

12

400

-12÷6

-2

500

-24/-3

8

Word Problems

100

At 2 pm, the temperature was -9 degrees. If the temperature drops 20 degrees, what is the new temperature?

-9 - 20 = -29 degrees

200

Sandy spent 5 hours hiking 4500 feet down into the Grand Canyon. What was her average hourly change in elevation?

-4500/5 = -900 feet per hour

300

 ROLLER COASTER  A roller coaster begins at 90 feet above ground level. Then it descends 105 feet. Find the height of the coaster after the final descent?

90 - 105 = -15 feet

400

DROUGHT  A drought can cause the level of the local water supply to drop by a few inches each week. Suppose the level of the water supply drops 3 inches each week. How much will it change in 6 weeks?

-3 x 6 = -18 inches

500

STOCK MARKET  During a 5–day workweek, the stock market decreased by 65 points. Find the average daily change in the market for the week.

-65/5 = -13 points per day