adding positives
subtracting positives
adding negatives
subtracting negatives
all of it
100

10 + 10

20

100

12 - 6

6

100

-1 + - 2

-3

100

-6 - (-5)

-1
100

- 12 + 16

4

200

20 + 12

32

200

6 - 15

 -9

200
-6 + -7

-13

200

-12 - -5

-7

200
-14 - 1

-15

300

15 + 21

 36

300

15 - 23

 -8

300

-15 + - 12

-27

300

-6 - -12

6

300

12 + - 16

-4

400

32 + 15

 47

400

12 - 14

-2

400

-32 + -56

-88

400

- 7 - -12

5

400

- 12 - 5

-17

500

52 + 32

84

500
56 - 23
33
500

-5 + -232

-237

500

-16 - -23

7

500

-24 + 16

-8

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