0.25×4.8×0.48數(shù)學(xué)公式+數(shù)學(xué)公式0.25×8數(shù)學(xué)公式+數(shù)學(xué)公式+數(shù)學(xué)公式

解:(1)0.25×4.8×0.48,
=0.25×(4+0.8)×0.48,
=(0.25×4+0.25×0.8)×0.48,
=(1+0.2)×0.48,
=1×0.48+0.2×0.48,
=0.48+0.096,
=0.576;

(2)+,
=+,
=

(3)0.25×8=2;

(4)++
=++,
=1+,
=1
分析:(1)將4.8分成4和0.8,利用乘法分配律解答即可;
(2)先通分化成同分母分?jǐn)?shù),再相加即可;
(3)直接利用乘法計(jì)算的方法,解答即可;
(4)先計(jì)算+,所得的和再與相加即可.
點(diǎn)評(píng):此題主要考查分?jǐn)?shù)、小數(shù)四則混合運(yùn)算的方法,要注意,能簡(jiǎn)便計(jì)算的,要簡(jiǎn)便計(jì)算.
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