Show:
Regular Problems
Start With A Negative
Start With a Positive
Bonus
Regular Problems
100

16 - 13

3

100

-12 - 4

-16

100

19 - 19

0

100

6 + 22

28

100

78-16

62

200

24-7

14

200

-8 - (-12)

4
200

14 - (-20)

34

200

33 +  13

46

200

99-29

70

300

90-15

75

300

-3 - (-16)

13

300

7 - 9

-2

300

112 + 4

116

300

163-57

106

400

121-9

112

400

-12 - 14

-26

400

24 - (-9)

33

400

200 +  50

250

400

98-19

79

500

254-23

231

500

-11 - 13

-24

500

3 - 14

-11

500

1000 + 0

1000

500

514.7 - 7.3

507.4