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100

-3+2

-1

100

(-8)-(4)

-12

100

-7*4

-28

100

-12/-3

4

200

5+(-1)

4

200

(12)-(-2)

14

200

28*-2

-56

200

36/-3

-12

300

-8+2

-6

300

(20)-(3)

-17

300

-23*-4

92

300

72/3

24

400

-3+4

1

400

(38)-(-28)

66

400

45*12

540

400

-159/-3

53

500

-34+12

-22

500

(128)-(-243)

371

500

-172*27

-4644

500

278/-2

-139