问题
解答题
用简便方法计算下面各题
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答案
(1)245-65-35,
=245-(65+35),
=245-100,
=145;
(2)186+82+18,
=186+(82+18),
=186+100,
=286;
(3)25×(4×27),
=(25×4)×27,
=100×27,
=2700;
(4)8×(25+20),
=8×25+8×20,
=200+160,
=360;
(5)24×56+44×24,
=24×(56+44),
=24×100,
=2400;
(6)700÷4÷25,
=700÷(4×25),
=700÷100,
=7.