6.3÷3.45=________÷345,________÷0.68=13.2÷68.

630    0.132
分析:根據(jù)商不變的性質(zhì):在除法里,被除數(shù)和除數(shù)同時擴(kuò)大或縮小相同的倍數(shù)(0除外),商不變;據(jù)此解答.
解答:6.3÷3.45,
=(6.3×100)÷(3.45×100),
=630÷345,
13.2÷68,
=(13.2÷100)÷(68÷100),
=0.132÷0.68;
故答案為:630,0.132.
點(diǎn)評:此題考查商不變性質(zhì)的運(yùn)用:只有被除數(shù)和除數(shù)同時擴(kuò)大或縮小相同的倍數(shù)(0除外),商才不變.
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