75%
=0.75
=0.75
（化成小數(shù)）；
56
=
83.3%
83.3%
（化成百分?jǐn)?shù)）．
分析：把百分?jǐn)?shù)化小數(shù)，只要去掉百分號，同時把小數(shù)點向左移動兩位即可；
把分?jǐn)?shù)化百分?jǐn)?shù)，先用分?jǐn)?shù)的分子除以分母得出小數(shù)商，除不盡時通常保留三位小數(shù)，再把小數(shù)點向右移動兩位，同時填上百分號．
解答：解：75%=0.75；
5
6
=5÷6≈0.833=83.3%．
故答案為：0.75，83.3．
點評：此題考查百分?jǐn)?shù)與小數(shù)、分?jǐn)?shù)與百分?jǐn)?shù)互化方法的靈活運用．
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