Subtracting Integers
Adding Integers
Re-write As Addition
The Weather
100

6 - 9 = ?

-3

100

(-8) + 10 =

2

100

Re-write as addition:

8 - 16 = 

8 + (-16) =

100

The temperature is 16C in the afternoon and drops 9C by 10pm.

What is the temperature at 10pm?

7C

200

3 - 11 = ?

-8

200

9 + (-7) =

2

200

Re-write as additon:

4 - (-14) =

4 + 14 =

200

The temperature in Alaska in January is -5C during the day and drops 8 degrees by night.

What is the temperature at night?

-13C

300

5 - (-10)

15

300

(-7) + 14

7

300

Re-write as addition:

(-8) - (-3) = 

(-8) + 3 

300

After the temperature decreased 14 degrees overnight it is -5.

What was the initial temperature?

9 degrees

400

(-8) - (-8) = ?

0

400

(-13) + (-9) = ?

-22

400

Re-write as addition:

(-9) - 9 =

(-9) + (-9)=

400

After the temperature decreased 18 degrees from noon to midnight it was -3 degrees.

What was the initial temperature?

15 degrees

500

(-7) - 7 = ?

-14

500

(-6) + 19 = ?

13

500

Re-write as addition:

543 - 692 =

543 + (-692) = 

500

After the temperature decreased 29 degrees from sunset to sunrise, the temperature was -9 degrees.

What was the initial temperature?

20 degrees

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