A-A+
计算下面各题 怎样简便就怎样算.(1)(125+732)×8(2)194×20%+194×4
问题详情
计算下面各题,怎样简便就怎样算.
参考答案
(1)(125+732)×8,
=125×8+732×8,
=1000+1.75,
=1001.75;
(2)194×20%+194×45,
=194×(20%+45),
=194×1,
=194;
(3)25×32×125,
=25×(4×8)×125,
=(25×4)×(8×125),
=100×1000,
=100000;
(4)99×1100,
=(100-1)×1100,
=100×1100-1×1100,
=1-1100,
=99100;
(5)34×(122-21-1)÷1100,
=34×100÷1100,
=75÷1100,
=7500;
(6)127÷45×1252×45×270,
=127×54×1252×45×270,
=125×5,
=625.
考点: