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Addition
Subtraction
100

12345678+98765432=?

111111110

100

1000-999=?

1

200

50505+(28364+50) =?

78919

200

99999-9999-999

89001

300

01234+43210=?

44444

300

357896-(24785+2374)=?

330737

400

34673+27465+ (400-200)=

62338

400

9874-876=?

8998

500

247164+76358=?

323522

500

9876543210-1234567890=?

8641975320