进位加法62()4()372()31()94()8()3415255填():9+()=10 8+()=10 6+()=10 5+()=10123457+()=102+()=1089+4=131 3107+6=138+3=1117+8=9+5=5+6=7+5=14 15 11 127+6=4+8=9+2=5+8=13121113口算:口算:12+=+=+=+=4812571239121111212+=+=+=+=4812571239121111212+=+=+=+=4812571239122101212+=+=+=+=4812571239121021212+=+=+=+=481257123912931212+=+=+=+=481257123912841212+=+=+=+=481257123912751212+=+=+=+=481257123912661212+=+=+=+=48125712391212012