把下列各題改寫成除數(shù)是整數(shù)的除法36÷0.36=________÷________ 0.09÷0.3=________÷________.
3600 36 0.9 3
分析:(1)36÷0.36只要把除數(shù)化成整數(shù)即可,0.36變成36需要擴大100倍,根據(jù)商不變的性質(zhì)可知:被除數(shù)也同時擴大100倍;
(2)把0.09÷0.3轉(zhuǎn)化成除數(shù)是整數(shù),需要把0.3的小數(shù)點向右移動1位,那么被除數(shù)的小數(shù)點也向右移動1位,即0.9÷3.
解答:36÷0.36=3600÷36;
0.09÷0.3=0.9÷3;
故答案為:3600,36,0.9,3.
點評:此題考查商不變性質(zhì)的運用,關(guān)鍵是被除數(shù)和除數(shù)同時擴大或縮小相同的倍數(shù)(0除外),商才不變.