Show:
Same Sign +
Differnent Signs
Mix Signs
100

-5 + -2=

-7

100
-8 + 3 =

- 5

100

10 + 6 = 

16

200

-7 + -8 =

- 15

200

-3 + 7 =

 4

200
-9 + -5 =

- 14

300
-10 + -2=

-12

300

13 + -5 = 

8

300

-15 + -6 = 

-21
400

-25 + -12 =

- 37

400

-34 + 14 =

- 20

400

75 + - 26 = 

49

500

-98 + - 33= 

- 131

500

56 + - 26 =

30

500

- 88 + 23 = 

 -65