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1、單擊此處編輯母版標(biāo)題樣式,單擊此處編輯母版文本樣式,第二級(jí),第三級(jí),第四級(jí),第五級(jí),*,2 3,2 0,5,4,?,4,2 3,2 0,5,4,3,4,3,2 8,2 4,6,4,?,4,2 7,2 0,5,4,3,5,2,余數(shù)和除數(shù)的關(guān)系,列除法豎式要注意什么?,1 5,1 5,0,3,5,被除數(shù),5,和,3,的積,除數(shù),商,商要對(duì)著被除數(shù)的個(gè)位,除法豎式,15,5,=3,(,組,),16,5,3,(,組,),1,(,盆,),17,5,=3,(,組,),2,(,盆,),18,5,=3,(,組,),3,(,盆,),19,5,=3,(,組,),4,(,盆,),20,5,=4,(,組,),21,5
2、,=4,(,組,),1,(,盆,),22,5,=4,(,組,),2,(,盆,),23,5,=4,(,組,),3,(,盆,),24,5,=4,(,組,),4,(,盆,),25,5,=5,(,組,),觀察算式中的除數(shù)和余數(shù)你發(fā)現(xiàn)了什么?,15,5,3,(組),16,5,3,(組),1,(盆 ),17,5,3,(組),2,(盆),18,5,3,(組),3,(盆),19,5,3,(組),4,(盆),20,5,4,(組),21,5,4,(組),1,(盆),22,5,4,(組),2,(盆),23,5,4,(組),3,(盆),24,5,4,(組),4,(盆),25,5,5,(組),余數(shù)一定比除數(shù)(),余數(shù)和
3、除數(shù)之間有什么關(guān)系呢?,余數(shù)和除數(shù),除數(shù)是,5,,,余數(shù)總是,1,、,2,、,3,、,4,。,余數(shù),除數(shù),進(jìn)行有余數(shù)的除法計(jì)算時(shí),結(jié)果中的余數(shù)一定要比除數(shù)小。,一、猜猜余數(shù)會(huì)有哪些?,1,、當(dāng)除數(shù)是,5,時(shí),余數(shù)可能是(),2,、當(dāng)除數(shù)是,8,時(shí),余數(shù)可能是(),3,、當(dāng)除數(shù)是,12,時(shí),余數(shù)可能是,(),1,、,2,、,3,、,4,1,、,2,、,3,、,4,、,5,、,6,、,7,1,、,2,、,3,、,4,、,5,、,6,、,7,、,8,、,9,、,10,、,11,在一道有余數(shù)的除法算式中,如果除數(shù)是,5,,余數(shù)有可能是幾?如果除數(shù)是,8,,余數(shù)有可能是幾?,看誰算得又對(duì)又快。,17,4,=,28,6,=,78,8,=,45,7,=,4,1,4,4,9,6,6,3,余數(shù)和除數(shù),余數(shù),除數(shù),進(jìn)行有余數(shù)的除法計(jì)算時(shí),結(jié)果中的余數(shù)一定要比除數(shù)小。,