Adding and Subtracting Negative and Positive Numbers!

Positive + Negative

100

3 + -3

0

200

23 + -3

20

300

39 + -27

12

400

86 + -49

37

500

433 + -272

161

Negative - Positive

100

-7 - 3

-10

200

-16 - 4

-20

300

-3 - -11

8

400

-46 - 93

139

500

-189 - 200

-389

Positive - Negative

100

3 - -7

10

200

5 - -17

22

300

84 - -36

120

400

128 - -125

253

500

722 - -227

949

Negative + Negative

100

-9 + -4

-13

200

-17 + -6

-23

300

-41 + -28

-69

400

-73 + -63

-136

500

-673 + -432

-1105

Negative - Negative

100

-10 - -7

-3

200

-17 - -8

-9

300

-36 - -43

7

400

-67 - -48

-19

500

-338 - -666

331