53+66+53 32+4032+30 46-2046+20 43-634-6
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=
①60-36=
②9+72=
③53-49=
④80-4=
⑤28+47=
⑥93-39=
>>