1、40+27-37= 54-34+3= 95-60+60= 45+30-21= 22+62-49= 64+19-60= 99-39+3= 69+2-4= 71-42+41= 19-4+50= 二、列竖式计算33+59-3=65-28-12=42+29+24=37-28+45=55+26-67=83-66+34=65+28-43=34+27-55=49-18-4=78+22-99=39+40-43=34+58-56=89-27-44=49-38-4=56-39+54=49-6+12= 31+43-3= 56-28+35= 11+14-11= 93+4+2=87+10+7= 72+22+2= 69+
2、16+6= 84+14+2= 14+16+30= 65-25+7= 6+21+51= 28+56-1= 80+16+3= 70+4-17= 32+69-69=97-18-66=42+39+17=33-26+82=45+34-54=43-27+34=64+35-87=34+66-37=45-28-12=69+12-45=45+30-23=67+18-45=79-47+24=43-28+49=89-39-28=23+49-34=45-29+45=78+19-66=68-28+39=49+26-27=93-78+44=89-27-33=29+27-52=58-20+33=56+33-45=39+61
3、-36=48+37-28=78-39-34=38-28-10=53-29+9=85-44-8= 98-23+17= 54-37-16= 82-9+3= 98-97-1= 96-84+2= 74-40-24= 47-18-11= 86-42+23= 63-55-5= 83-44-18= 91-28+24= 30-26-3= 47+12-28= 12+33-9= 56+38-33=23-17+59=67+32-34=59-23+41=44+25-65=99-68-23=90-21-44=45+17-57=39-20+45=56+39-47=33+55-44=48+27-33=88-43-22=28-26+44=44-18+66=45+63-62= 76-48-19= 53+23-43= 24-2+7= 57+31-38= 98-18+8= 73+6-50= 41+21-22= 65-55+19= 89-61+62= 98-57+51= 29+1-13= 87-70+80=