addition
subtraction
SUPER HARD MADNESS
100

6+7=

what is 13

100

5-5=

what is 0

100

5X4=

what is 20

200

100,000,000+500,000,000=

what is 600,000,000

200

1,555- 2,555=

what is 1,000

200

7X7=

what is 49

300

777+221+1=

what is 999

300

6-4=

what is 2

300

5X9=

what is 45

400

5,000+2,111=

what is 7,111

400

600-200=

what is 400

400

5X200

what is 1,0000 

500

11111111+22222222=

what is 33333333

500

555555555-44444444

what is 111111111

500

5X2,000

what is 1,0000

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