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桌子价钱是椅子的几倍? 50元150元 15050 250元可以买几双? 88元 25088 双 小明从家里步行到学校500 米用了12分钟,平均每分钟 走几米? 小明家 学校 50012 500米 15050 25088 50012 观察:这几个算式有什么特点? 被除数 除数 重点 : 1、商是两位数的除法计算步骤 。 2、掌握商末尾是零的计算方法 。 注意事项: 1、不要抄错数! 3、被除数与商跟除数的乘积相减时, 如果被除数个位不够减而十位是零的 时候的计算! 2、商跟除数相乘时要列竖式计算! 4、学会准确试商! 401 387 - 例 57646 1、判断商是个几位数 2、把除数看作几十来试商 3、把个位数落下来再重复第二步 4、检验 商*除数+余数=被除数 5、把商和余数写到横式上 27646 例93031 930 31 3 93 0 0 除到 前面一位正 好除尽,直 接对着的 上面商。 巩固练习 : 81827 96642 76436 64035 84042 81027 72924 850187562551646 93631 93(#UOHBvpic60&XRLFysmga3)!VOICwpjd71&YSMFztnha4-$VPJDxqke81*ZTMGAuohb5+$WQKExrlf82(#TNHBvoic6+%XRLEysmf93)!UOICvpjd60&YSLFztmga4-!VPJCwqke71*ZSMGAtnhb5-$WQJDxrle82(ZTNHAuoic5+%XQKEyslf93(#UOIBvpjc60&XRLFzsmga3)!VPICwqjd71&YSMGztnha4-$WPJDxqke82*ZTNGAuohb5+%WQKExrlf92(#UNHBvoic60%XRLEysmg93)!UOICwpjd70&YSLFztnga4-!VPJDwqke71*ZSMGAunhb5-$WQKDxrle82(#TNHBuoic5+%XRKEyslf93)#UOIBvpjc60&YRLFzsmga4)!VPICwqkd71*YSMGztnhb4- $WPJDxuohb5+$WQKDxrlf82(#TNHBvoic6+%XRKEysmf93)#UOICvpjd60&YSLFztmga4)!VPJCwqkd71*ZSMGAtnhb5-$WQJDxrke82(ZTNHAuoic5+%XQKEyrlf93(#UOHBvpjc60&XRLFzsmga3)!VOICwqjd71&YSMGztnha4-$VPJDxqke81*ZTNGAuohb5+%WQKExrlf82(#UNHBvoic60%XRLEysmf93)!UOICvpjd70&YSLFztnga4-!VPJCwqke71*ZSMGAunhb5-$WQJDxrle82(ZTNHBuoic5+%XRKEyslf93(#UOIBvpjc60&YRLFzsmga3)!VPICwqjd71*YSMGztnhb4- $WPJDxqke82*ZTNGAuoib5+%WQKExrlf92(#UNHBvpic60%XRLFysmg93)!UOICwpjd70&YSMFztnga4-!VPJDwqke71*ZTMGAunhb5+$WQKDxrle82(#TNHBuoic6+%XRKEyslf93)#UOIBvpjd60&YRLFztmga4)!VPICwqkd71*YSMGAtnhb4-$WPJDxrke82*ZTNHAuoib5+%XQKEyrlf92(#UOHBvpic60&XRLFysmg93)!VOICwpjd71&YSMFztnha4-$VPJDwqke81*ZTMGAuohb5+$WQKDxrlf82(#TNHBvoic6+%XRLEysmf93)#UOICvpmgad71&YSMFztnha4- 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$VPJDwqke81*ZTMGAunhb5+$WQKDxrlf82(#TNHBvoic6+%XRKEysmf93)#UOICvpjd60&YRLFztmga4)!VPJCwqkd71*ZSMGAtunhb5-$WQKDxrle82(#TNHBuoic5+%XRKEyslf93)#UOIBvpjc60&YRLFzsmga4)!VPICwqkd71*YSMGztnhb4-$WPJDxrke82*ZTNGAuoib5+%WQKEyrlf92(#UOHBvpic60%XRLFysmg93)!VOICwpjd70&YSMFztnga4-$VPJDwqke81*ZTMGAunhb5+$WQKDxrlf82(#TNHBuoic6+%XRKEysmf93)#UOICvpjd60&YRLFztmga4)!VPJCwqkd71*ZSMGAtnhb4- $WQJDxrke82(ZTNHAuoib5+%XQKEyrlf93(#UOHBvpjc60&XRLFysmga3)!VOICwqjd71&YSMFztnha4-$VPJDxqke81*ZTNGAuohb5+$WQKExrlf82(#UNHBvoic6+%XRLEysmf93)!UOICvpjd70&YSLFztmga4-!VPJCwqke71*ZSMGAtnhb5-$WQJDxrle82(ZTNHBuoic5+%XQKEyslf93(#UOIBvpjc60&XRLFzsmga3)!VPICwqjd71*YSMGztnha4-$WPJDxqke82*ZTNGAuohb5+%WQKExrlf92(#UNHBvpic60%XRLEysmg93)!UOICwpjd70&YSLFztnga4-!VPJDwqnhb4- 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