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下面各题 怎样算简便就怎样算 (1)1516-(712+16)×12(2)(1-75%)÷(
问题详情
下面各题,怎样算简便就怎样算
参考答案
(1)1516-(712+16)×12,
=1516-34×12,
=1516-38,
=916;
(2)(1-75%)÷(1+14),
=14÷54,
=15;
(3)517×924+717×924,
=(517+717)×924,
=1217×924,
934;
(4)(25-25÷2)×53,
=(25-15)×53,
=15×53,
=13;
(5)59÷[1÷(110-9%)],
=59÷[1÷0.01],
=59÷100,
=0.59;
(6))15×79+21×0.2,
=(79+21)×0.2,
=100×0.2,
=20.
考点: