分析:(1)可根據(jù)湊整法計(jì)算;
(2)可將32拆分為4×8后根據(jù)乘法結(jié)合律計(jì)算;
(3)可根據(jù)乘法分配律計(jì)算;
(4)可將101拆分為100+1后根據(jù)乘法分配律計(jì)算;
(5)可將25.25拆分為25+0.25后根據(jù)乘法分配律計(jì)算;
(6)可根加法交換律及結(jié)合律計(jì)算.
解答:解:(1)486-198
=486-200+2,
=286+2,
=288;
(2)25×32×125
=(25×4)×(8×125),
=100×1000,
=100000;
(3)4.8×54+54×5.2
=(4.8+5.2)×54,
=10×54,
=540;
(4)37×101
=37×(100+1),
=37×100+37×1,
=3700+37,
=3737;
(5)25.25×4
=(25+0.25)×4,
=25×4+0.25×4,
=100+1,
=101;
(6)0.58+0.32+0.44+0.68
=(0.58+44)+(0.32+0.68),
=1.02+1,
=2.02.
點(diǎn)評(píng):完成本題要注意分析式中數(shù)據(jù)的特點(diǎn)及內(nèi)在聯(lián)系,然后運(yùn)用合適的方法計(jì)算.