二年级数学下册第1章野营—有余数的除法第1课时有余数的除法课件1青岛版六三制.ppt

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1、饼干可以分给几人?,草莓可以分给几人?,你能提出一个用除法计算的问题吗?,10片饼干,每人分3片饼干,每人分4个草莓,12个草莓,问题:从图中你知道了哪些数学信息?,你问我说,10片饼干,每人分3片,可以分给几人?,10片饼干,每人分3片,可以分给3人,还剩1片。,你问我说,10片饼干,每人分3片,可以分给几人?,写成除法算式是:,103=3(人)1(片),余数,读作:10除以3等于3余1,有12个草莓,每人分4个,可以分给几人? 如果有13个、14个、15个或16个呢?,124=3(人),你问我说,你问我说,12个,124=3(人),13个,14个,15个,16个,134=3(人)1(个)

2、144=3(人)2(个),154=3(人)3(个),164=4(人),你问我说,有12个草莓,每人分4个,可以分给几人? 如果有13个、14个、15个或16个呢?,我发现余数都比除数小,为什么余数都比除数小呢?,144=3(人)2(个),134=3(人)1(个),124=3(人),154=3(人)3(个),没有剩余,问题:观察这些算式,你有什么发现?,有余数的除法,164=4(人),有剩余,你问我说,1. 摆一摆,填一填。,2,2,4,1,2,3,5,3,2.,每个花瓶里插4枝花,可以插几个花瓶?还剩几枝?,答:可以插5个花瓶,还剩1枝。,3.,答:还剩下2个桃子。,把下面这筐桃子给每只小猴分5个,可以分给多少只小猴?还剩下多少个桃子?,这节课我学会了什么?快来说一说吧!,课本第3页自主练习第1,2题。,xx小学 x年级x班,xxx,

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