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adding tens

AB
25+10=35
44+20=64
82+10=92
62+20=82
66+30=96
37+20=57
51+40=91
77+20=97
15+60=75
28+20=48
22+50=72
38+20=58
31+10=41
43+50=73
41+30=71
52+30=82
58+20=78
64+1074
75+20=95
78+10=88

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