1557X9X378=6X299二432姓名:静下心来,慢慢算,提高正确率
记住:4号上学交
86-F4=408F4=15X6=810F3=70F5=630F5=16X5=4500F5=57X9=89X7=75X8=68X8=840F3=1800F3=78X5=1800F3=506X4=607X4=25X4=803X4=36F3=48F4=24X5=4200F6=91F7=280F4=125X8=0F180=8X125=907X3=604X5=6X115=2400F8=2800F7=4000F5=800F6=列竖式计算:517F5=783F6=209F3=676F4=256X7=X118=4X563=6X681=8403F5=507F3=806F7=830F9=X7=419X8=176X5=4X365275X52=89X37=69X92=42750X4=894^6=185^5=79^3=514^3=56X72=64X53=16X68=81X18=419X8=176X5=4X3653175-75F25=(114+166)F5=216+305-276=6X(15X9)=25X(26X4)=415-176-24=415-(176-24)=506-960F5=264+159+47=68+35X13=432F(2X4)=25X(192F6)=402+359-143=26X44F8=354-(229+46)=354-229+46=13X(266-250)=892-537+269=4725-(125+237)=189-60+40=47+236+64=78+122+257=15X(3000F25)=216+42F7=(324-285)F3=45-30F5=763-386-163=82X150=270X36=64X350=80X405=先算什么
在先算的下面划横线,得数写在横线下,竖式列在草