题目内容
简便计算
| 55×25-25×45 | 29×201 | 101×37 |
(1)55×25-25×45,
=(55-45)×25,
=10×25,
=250;
(2)29×201,
=29×(200+1),
=29×200+29×1,
=5800+29,
=5829;
(3)101×37,
=(100+1)×37,
=100×37+1×37,
=3700+37,
=3737.
=(55-45)×25,
=10×25,
=250;
(2)29×201,
=29×(200+1),
=29×200+29×1,
=5800+29,
=5829;
(3)101×37,
=(100+1)×37,
=100×37+1×37,
=3700+37,
=3737.
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