分析:(1)可根據(jù)乘法交換律計(jì)算;
(2)(3)(4)可根據(jù)乘法分配律計(jì)算;
(5)可根據(jù)湊整法計(jì)算;
(6)可將10.1拆分為10+0.1后根據(jù)乘法分配律計(jì)算;
(7)(8)根據(jù)四則混合運(yùn)算的運(yùn)算順序計(jì)算即可:先算乘除,再算加減,有括號(hào)的要先算括號(hào)里面的.
解答:解:(1)2.5×7.1×4
=2.5×4×7.1,
=10×7.1,
=71;
(2)16.12×99+16.12
=(99+1)×16.12,
=100×16.12,
=1612;
(3)5.2×0.9+0.9×4.8
=(5.2+4.8)×0.9,
=10×0.9,
=9;
(4)26×15.7+15.7×24
=(24+26)×15.7,
=50×15.7,
=785;
(5)2.7×9.9
=2.7×(10-0.1),
=2.7×10-2.7×0.1,
=27-0.27,
=26.73;
(6)6.4×10.1
=6.4×(10+0.1),
=6.4×10+6.4×0.1,
=64+0.64,
=64.64;
(7)0.25×[(2.8+4.4)÷1.2]
=0.25×[7.2÷1.2],
=0.25×6,
=1.5;
(8)[32-(1.95-1.95)]÷1.6
=[32-0]÷1.6,
=32÷1.6,
=20.
點(diǎn)評:完成本題要注意分析式中數(shù)據(jù)的特點(diǎn),運(yùn)用合適的方法進(jìn)行計(jì)算.