(1)3-1數(shù)學(xué)公式=(2)0.6÷數(shù)學(xué)公式=(3)75×10%=
(4)數(shù)學(xué)公式+數(shù)學(xué)公式×4=(5)48×(數(shù)學(xué)公式-數(shù)學(xué)公式)=

解:(1)3-1=1或 

(2)0.6÷=1;

(3)75×10%=7.5;

(4)+×4=3;

(5)48×(-
=48×-48×,
=12-8,
=4.
分析:根據(jù)分?jǐn)?shù)減法、分?jǐn)?shù)除法、百分?jǐn)?shù)的計(jì)算方法和分?jǐn)?shù)的四則混合運(yùn)算的運(yùn)算順序進(jìn)行計(jì)算即可得到答案,其中(5)可利用乘法分配律進(jìn)行計(jì)算比較簡(jiǎn)便.
點(diǎn)評(píng):此題主要考查的是分?jǐn)?shù)的四則混合運(yùn)算和乘法分配律的應(yīng)用.
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