0.45÷0.09=
45
45
÷
9
9
=
5
5
分析:商不變性質(zhì)為:被除數(shù)和除數(shù)同時擴(kuò)大或縮小相同的倍數(shù)(零除外),商不變;據(jù)此解答即可.
解答:解:0.45÷0.09
=(0.45×100)÷(0.09×100)
=45÷9
=5
故答案為:45,9,5.
點(diǎn)評:此題考查商不變的性質(zhì)的運(yùn)用.
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