Integer Computation Review

Addition

100

8 + 2 =

10

200

-3 + 7 =

4

300

4 + ^-9 =

^-5

400

^-7 + ^-2 =

^-9

500

Kobe has $65 in his bank account.  Kobe withdraws $25 and deposits $50.  What is Kobe's bank account balance after these two transactions?

$90

Subtraction

100

8 - 3 =

5

200

^-4 - 7 =

^-11

300

3 - ^-2 =

5

400

^-11 - ^-4 =

^-7

500

The temperature is 7 degrees.  The temperature falls 4 degrees and then falls 8 more degrees.  What is the temperature now?

^-5 degrees

Multiplication

100

9 x 3 = 

27

200

^-5 x 6 =

^-30

300

8 x ^-2 =

^-16

400

^-9 x ^-9 =

81

500

The temperature falls 4 degrees each hour for 5 hours.  What is the change in temperature after those 5 hours?

^-20 degrees

Division

100

18 ÷ 3 =

6

200

24 ÷ ^-6 =

^-4

300

^-36 ÷ 6 =

^-6

400

^-15 ÷ ^-5 =

3

500

Lori thinks she is shrinking.  Over the last 4 years, her height has decreased 20 cm .  Her height changed the same amount each year.  How much did her height change each year?

^-5 cm per year

Absolute Value

100

| 4 | = 

4

200

| ^-9 | =

9

300

-| 4 | =

^-4

400

-| -2 | =

^-2

500

A bird is flying 23 feet above the surface of the ocean. A fish is swimming 5 feet below the surface of the ocean.  How far is the bird from the fish?

28 feet