adding negatives
subtracting negatives
mixed problems
challenge problems
100

-4+-2=

-6

100

-6--2=

-4

100

-6+5

-1

100

-98+9

-89

200

 -6+5=

-1

200

1--4=

5

200

-1+-4

-5

200

-14+-22

-36

300

-7+9=

2

300

-5--9=

4

300

-45+9=

-36

300

53 +-53

0

400

-54+-9=

-63

400

-92-5=

-97

400

-6+7

1

400

-92+22

-70

500

56+-81=

-35

500

-47--47=

0

500

9--4

13

500

- 912+-20

-932

M
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