分析:(1)根據(jù)減法的性質(zhì)簡算;
(2)先算小括號里面的減法,再算括號外的除法,最后算括號外的加法;
(3)先算除法,再算乘法,最后算減法;
(4)先同時(shí)運(yùn)算除法和乘法,最后算加法;
(5)先把小括號里面的加法運(yùn)用加法結(jié)合律簡算,再算括號外的減法;
(6)根據(jù)減法的性質(zhì)和加法結(jié)合律簡算.
解答:解:(1)815-185-315,
=815-315-185,
=500-185,
=315;
(2)1872+472÷(205-197),
=1872+472÷8,
=1872+59,
=1931;
(3)3360-360÷15×26,
=3360-24×26,
=3360-624,
=2736;
(4)688÷8+37×29,
=86+1073,
=1159;
(5)8000-(1532+457+543),
=8000-[1532+(457+543)],
=8000-(1532+1000),
=8000-2532,
=5468;
(6)(653+1977)-(453+277),
=653+1977-453-277,
=(653-453)+(1977-277),
=200+1700,
=1900.
點(diǎn)評: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)用一些定律進(jìn)行簡便計(jì)算.