0.625 0.25 4.75 2.375
分析:把分?jǐn)?shù)化小數(shù),用分?jǐn)?shù)的分子除以分母即得小數(shù)商,除不盡時(shí)通常保留三位小數(shù);如果是帶分?jǐn)?shù),可以整數(shù)部分不動(dòng),直接把分?jǐn)?shù)部分化成小數(shù),再把兩個(gè)部分合起來;也可以先把帶分?jǐn)?shù)化成假分?jǐn)?shù),進(jìn)一步轉(zhuǎn)化即可.
解答:(1)
=5÷8=0.625;
(2)
=1÷4=0.25;
(3)因?yàn)?img class='latex' src='http://thumb.1010pic.com/pic5/latex/365.png' />=0.75,
所以4
=4.75;
(4)因?yàn)?img class='latex' src='http://thumb.1010pic.com/pic5/latex/597.png' />=0.375,
=2.375.
故答案為:0.625,0.25,4.75,2.375.
點(diǎn)評:此題考查分?jǐn)?shù)與小數(shù)的轉(zhuǎn)化掌握方法,正確轉(zhuǎn)化即可.