________:16=9:________=0.75=________%
12 12 75
分析:解答此題的突破口是0.75,把0.75化成分?jǐn)?shù)并化簡是
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,根據(jù)比與分?jǐn)?shù)的關(guān)系,
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=3:4,再根據(jù)比的基本性質(zhì),比的前、后項(xiàng)都乘4就是12:16;比的前、后項(xiàng)都乘3就是9:12;把0.75的小數(shù)點(diǎn)向右移動(dòng)兩位,添上百分號就是75%.由此進(jìn)行轉(zhuǎn)化并填空.
解答:12:16=9:12=0.75=75%;
故答案為:12,12,75.
點(diǎn)評:此題主要是考查小數(shù)、百分?jǐn)?shù)、比之間的關(guān)系及轉(zhuǎn)化,利用它們之間的關(guān)系和性質(zhì)進(jìn)行轉(zhuǎn)化即可.