52-5十多 47-8十多 80-8十多
91-7十多 34-5十多 63-4十多
11-5 9 17-9 6 15+0 16
12-7 11-6 54-6 54-7 65-40 65-4
62-7 = 57-3= 12-7= 5+33= 17-8=
53-8= 11-8= 55+4= 14-7= 76-2=
16-9= 49+3= 25+20= 12-8= 17+50=
92-40= 88-60= 7+50= 90+3= 4+27=
48+8= 77-9= 86-20= 5+60= 50-3=