问题
解答题
计算下面各题,能简算的要简算.
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答案
(1)3200÷80-14×2,
=40-28,
=12;
(2)32×202,
=32×(200+2),
=32×200+32×2,
=6400+64,
=6464;
(3)285×38+15×38,
=(285+15)×38,
=300×38,
=11400;
(4)120×25,
=30×4×25,
=30×(4×25),
=30×100,
=3000;
(5)490÷[(215-208)×4],
=490÷[7×4],
=490÷7÷4,
=70÷4,
=17.5;
(6)95×101-95,
=95×(101-1),
=95×100,
=9500.