分析:(1)運(yùn)用減法的運(yùn)算定律進(jìn)行簡(jiǎn)算;
(2)依據(jù)加減法的運(yùn)算順序計(jì)算;
(3)運(yùn)用加減法的運(yùn)算定律進(jìn)行簡(jiǎn)算;
(4)先去括號(hào),再運(yùn)用加減法的運(yùn)算定律進(jìn)行簡(jiǎn)算;
(5)運(yùn)用加減法的運(yùn)算定律進(jìn)行簡(jiǎn)算;
(6)運(yùn)用加法的交換律、結(jié)合律進(jìn)行簡(jiǎn)算.
解答:解:(1)15-8.13-1.87,
=15-(8.13+1.87),
=15-10,
=5;
(2)5.14+3.225-6.302,
=8.365-6.302,
=2.063;
(3)3.95+5.36-1.95,
=3.95-1.95+5.36,
=2+5.36,
=7.36;
(4)13.67-(5.45+3.67),
=13.67-5.45-3.67,
=13.67-3.67-5.45,
=10-5.45,
=4.55;
(5)4.26+5.48-1.26+4.52,
=(4.52+5.48)+(4.26-1.26),
=10+3;
=13;
(6)14.67+25.91+15.33+4.09,
=(14.67+15.33)+(25.91+4.09),
=30+30,
=60.
點(diǎn)評(píng):此題是考查四則混合運(yùn)算,要仔細(xì)觀察算式的特點(diǎn),靈活運(yùn)用定律進(jìn)行簡(jiǎn)便.