Review of Integer Operations

-4

• 8

• -8

• 2

• -2

• -2

• 2

• 6

• -6

If the temperature drops 5 degrees every hour for 9 hours, which integer represents the change in temperature? 

• 14

• -14

• 45

• -45

6 - 9 = ?

• -3

• 3

• 15

• -13

-8 - 8 =

• 16

• 0

• -16

• 9

Anthony is playing a trivia game. On his first turn, he lost 100 points. On his second turn, he lost 75 points. On his third turn, he lost 85 points. Write an expression showing the change to Julio’s score after his first three turns.

• none

• -100 + (-75) + (-85)

• 100 + (-75) + (-85)

• -100 + (-75) + (-85)

Solve: 23 - 47 + 18 - (-12) =

• 6

• -18

• 56

• 18

14 + (22 - 2) =

• 34

• 37

• 40

20 x 2 - (10 - 4)

• 22

• 30

• 34

(23 + 24) -10 =

• 37

• 27

• 47