分析:(1)先算除法,再算減法.
(2)運(yùn)用乘法交換律進(jìn)行計(jì)算.
(3)根據(jù)乘法分配律進(jìn)行計(jì)算.
(4)把99轉(zhuǎn)化為100-1再根據(jù)乘法分配律進(jìn)行計(jì)算.
(5)把0.32分解成0.8×0.4,再根據(jù)乘法交換律和乘法分配律進(jìn)行計(jì)算.
解答:解:(1)9.02-22.78÷3.4
=9.02-6.7
=2.32;
(2)1.08×2.4÷0.27
=1.08÷0.27×2.4
=0.4×2.4
=0.96;
(3)4.75×2.6+3.4×4.75
=4.75×(2.6+3.4)
=4.75×6
=28.5;
(4)5.8×99
=5.8×(100-1)
=5.8×100-5.8
=580-5.8
=574.2;
(5)1.25×2.5×0.32
=1.25×2.5×0.8×0.4
=(1.25×0.8)×(2.5×0.4)
=1×1
=1.
點(diǎn)評:本題主要考查了學(xué)生根據(jù)題目特點(diǎn),在小數(shù)四則運(yùn)算中靈活運(yùn)用簡便方法進(jìn)行計(jì)算的計(jì)算能力.