part one

addition

100

what if you put a demical what would the promble be if 99.0+189.0

 288.0.

200

8907+1289+9088

19,284.

300

what combined,means not that hard

addition

400

48,657+23,584

72241

500

(Hint this in reverse) 89+1

09

subtraction

100

81234-72241

8993

200

89-88-1-1

-1