分析:(1)(2)運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(3)運(yùn)用加法的交換律、結(jié)合律進(jìn)行簡(jiǎn)算;
(4)把44化成11×4,再運(yùn)用乘法的結(jié)合律進(jìn)行簡(jiǎn)算;
(5)把104化成100+4,再運(yùn)用乘法的分配律進(jìn)行簡(jiǎn)算;
(6)先算除法,整數(shù)減法,最后算加法;
(7)先算小括號(hào)里的減法,再算中括號(hào)里的減法,最后算括號(hào)外的除法;
(8)先算小括號(hào)里的運(yùn)算,再算括號(hào)外的除法.
解答:解:(1)55×25+25×45,
=(55+45)×25,
=100×25,
=2500;
(2)77×13-13×27,
=(77-27)×13,
=50×13,
=650;
(3)142+586+358+114,
=(142+358)+(586+114),
=500+700,
=1200;
(4)44×25,
=11×4×25,
=11×(4×25),
=11×100,
=1100;
(5)104×32,
=(100+4)×32,
=100×32+4×32,
=3200+128,
=3328;
(6)55-36÷3+15,
=55-12+15,
=43+15,
=58;
(7)400÷〔300-(260-160)〕,
=400÷〔300-100〕,
=400÷200,
=2;
(8)540÷(30×15÷15),
=540÷30,
=18.
點(diǎn)評(píng):此題主要考查整數(shù)的四則混合運(yùn)算的運(yùn)算順序以及運(yùn)用運(yùn)算定律進(jìn)行簡(jiǎn)算的能力.