在橫線填上合適的數(shù).
0.12÷0.3=________÷3
6.72÷0.28=________÷28
4.06÷0.58=________÷________
32÷0.08=________÷________
2.55÷0.085=________÷85
212.8÷0.14=________÷14
51.75÷0.015=________÷15
33.6÷0.21=________÷21.
1.2 672 40.6 5.8 3200 8 2550 21280 51750 3360
分析:根據(jù)商不變的性質(zhì),被除數(shù)和除數(shù)同時擴大或同時縮小相同的倍數(shù)(0除外),商不變,據(jù)此解答即可得到答案
解答:0.12÷0.3=1.2÷3,
6.72÷0.28=628÷28,
4.06÷0.58=40.6÷5.8,
32÷0.08=3200÷8,
2.55÷0.085=2550÷85,
212.8÷0.14=21280÷14,
51.75÷0.015=51750÷15,
33.6÷0.21=3360÷21,
故答案為:1.2,672,40.6,5.8,3200,8,2550,21280,51750,3360.
點評:此題主要考查的是商不變性質(zhì)的應用,注意必須是被除數(shù)和除數(shù)同時擴大或同時縮小相同的倍數(shù)(0除外),商才不變.