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脱式计算 怎样简便就怎样算.101×99102(456-334)÷(314+27)(0.92
问题详情
脱式计算,怎样简便就怎样算.
参考答案
(1)101×99102
=(102-1)×99102
=102×99102-99102
=99-99102
=98134
(2)(456-334)÷(314+27)
=1112÷714
=1312×2
=136;
(3)(0.92+225)÷(4-279)
=(2325+225)÷129
=1×911
=911;
(4)36×(23+16-34)
=36×23+36×16-36×34
=24+6-27
=3;
(5)138×37+38×37
=37×(138+38)
=37×2
=67;
(6)49÷〔56-(16+13)〕
=49÷(56-16-13)
=49÷13
=49×3
=43.
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