分析:(1)運用加法交換律、結(jié)合律進(jìn)行簡算,
(2)先去括號,再進(jìn)行計算,
(3)運用加法交換律、結(jié)合律進(jìn)行簡算,
(4)運用減法的性質(zhì)進(jìn)行簡算,
(5)運用乘法的分配律進(jìn)行簡算,
(6)運用乘法的結(jié)合律、交換律進(jìn)行計算即可,
(7)運用乘法的分配律進(jìn)行簡算.
解答:解:(1)2.73+0.85+0.15+3.27
=(2.73+3.27)+(0.85+0.15)
=6+1
=7
(2)3.25-(0.25+0.86)
=3.25-0.25-0.86
=3-0.86
=2.14
(3)0.25+3.68-0.25+2.32,
=(0.25-0.25)+(2.32+3.68)
=0+6
=6
(4)92.8-35.6-24.4,
=92.8-(35.6+24.4)
=92.8-60
=32.8
(5)102×0.45
=(100+2)×0.45
=100×0.45+2×0.45
=45+0.9
=45.9
(6)2.33×0.5×4
=2.33×(0.5×4)
=2.33×2
=4.66
(7)1.2×2.5+0.8×2.5
=(1.2+0.8)×2.5
=2×2.5
=5
點評:完成本題要注意分析式中數(shù)據(jù),運用合適的簡便方法計算.