问题
解答题
用简便方法计算.
|
答案
37+125+63+175,
=(37+63)+(125+175),
=100+300,
=400;
75×56-56×28,
=(75-28)×56,
=43×56,
=2408;
8×(29×l25),
=29×(8×125),
=29×1000,
=29000;
156×l0l-156,
=156×(101×1),
=156×100,
=15600.
用简便方法计算.
|
37+125+63+175,
=(37+63)+(125+175),
=100+300,
=400;
75×56-56×28,
=(75-28)×56,
=43×56,
=2408;
8×(29×l25),
=29×(8×125),
=29×1000,
=29000;
156×l0l-156,
=156×(101×1),
=156×100,
=15600.