1、竖式计算28+34+23=46+25+17=37+28+19=54+20+16=7+59+20=19+55+25=注意进位的125+34+30=19+40+30=24+45+30=48+36+5=17+18+64=24+48+17=注意退位的点45+36+18=30+5+64=55+30+8=15+39+36=51+30+9=24+21+45=24+51+15=45+9+36=21+30+39=51+37+9=28+29+26=26+40+8=竖式计算85-40-26=90-58-24=72-6-40=56-12-17=40-23-12=36-4-32=注意进位的181-7-70=67-25-
2、28=70-23-35=78-24-39=98-28-9=71-26-7=注意退位的点67-25+28=56+34-20=78-24+39=70-23+45=37+10-5=74+6-80=39+8-20=56+8-20=18+8-20=69+30-45=26+40-8=65+18-39=竖式计算71-65+43=24+51-19=30-21+39=45+36-9=35-16+39=45-9+15=注意进位的128+43-24=23+41-39=98-37+16=90-11+32=31+52-17=96-60+24=注意退位的点17+6-8=43-8+30=50+27-9=42-8+35=46-39+7=27+50-9=75+9-73=28+4-24=70-4+18=7+26-18=82-7+13=20+34-49=
