93-74+46=75-29-31=24+41-29=44+17+29=70-36+49=57+23-44=47-38+75=71-28-19=54+24-17=37+18+29=51-27+36=43+39-67=80-34+46=64-29-17=36+28-26=19+25+24=45-29+37=82+13-88=49-35+71=52-26-19=61+29-58=35+25+29=69-57+87=64+17-45=83-24+53=77-32-39=56+44-54=22+18+34=58-37+54=39+27-66=75-45+34=83-28-36=42+29-32=44+18+29=90-77+34=51+29-22=60-36+55=94-30-51=34+52-66=37+17+23=88-79+48=35+26-19=65-24+49=73-16-25=33+17-43=
二年级竖式计算连加连减 来自淘豆网m.daumloan.com转载请标明出处.