问题
解答题
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答案
(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.