18
=
4
4
÷32=
12.5
12.5
%=
0.125
0.125
(小數(shù))
分析:解答此題的突破口是
1
8
,根據(jù)分?jǐn)?shù)與除法的關(guān)系,
1
8
=1÷8,再根據(jù)商不變的性質(zhì),被除數(shù)、除數(shù)都乘4就是4÷32;把
1
8
化成小數(shù),
1
8
=1÷8=0.125;把0.125的小數(shù)點(diǎn)向右移動兩位,添上百分號就是12.5%.由此進(jìn)行轉(zhuǎn)化并填空.
解答:解:
1
8
=4÷32=12.5%=0.125;
故答案為:4,12.5,0.125.
點(diǎn)評:此題考查除式、小數(shù)、分?jǐn)?shù)、百分?jǐn)?shù)、比之間的轉(zhuǎn)化,利用它們之間的關(guān)系和性質(zhì)進(jìn)行轉(zhuǎn)化即可.
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