Review: Integer Operations

Integer Applications

100

The temperature fell a total of 12^oF in 4 hours. How much did it change each hour?

-3^oF

200

A football team lost 3 yards on each of the 4 plays they ran. What was their overall change in yardage?

-12 yards

300

Harry missed 16 points on a test. Harry went back and tried to correct some questions and earned 12 points back. How many points has Harry lost/gained now?

-4 points

Lost 4 points

400

Mary is playing Bingo. Each Bingo card is $15. She plays 10 games and buys 20 cards. For each game, she came in second place and won $8. Did Mary earn her money back? If so, how much does she have? If not, how much is she in debt?

Cards: $15 x 20 = $300 spent

Games: 10 x $8 = $80 won

- 300 + 80 = - $220

$220 in debt

500

In a game, Allison won 5 points, then lost 8 points, then lost another 7 points and finally won 10 points. How many points did she end up with?

0 points

Integer Operations (+)

100

25 + 27 = 

52

200

-37 + (-13) =

(-50)  

300

(-15) + 15 =

0

400

-12 + (9) =

(-3)

500

8+(-15)=

-7

Integer Operations (-)

100

38 - 15

23

200

9 - (-20)=

29

300

32 - (-14) =

46

400

-97 - (-82) =

 -15

500

-49 - 22 =

-71

Integer Operations (*)

100

- 16 x - 4

64

200

8(-4)

-32

300

-12 x (-5) x (-2) =

-120

400

5 x (-13) - (-6) =

-59

500

-13 x (-6) ÷ (-3)

-26

Integer Operations (/)

100

-100 ÷ 4 =

-25

200

8 ÷ (-4) ÷ (-1) =

2

300

48 ÷ 6 x -5 

-40

400

-120 ÷ -40 x -9 =

-27

500

-350 ÷ 50 - (-19)  =

12