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Addition&Subtraction

Do Some +&-

AB
1+12
1+23
1+34
1+45
1+56
1+67
1+78
1+89
1+910
1+1011
50+50100
250+220470
10+1020
900+9001800
18+1836
90+90180
500+5001000
80+80160
900+9001800
456+456912
90-900
800-500300
60-5010
70-90-20
1800-900900
20-200
80+900980
50+900950
700-90610
50-1.148.9
50+50100
2000+502050
90+90180
2000+9002900
50+90140
60+60120
100+100200
50+50100
50+50+50+50200
50-60-10

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