> 数学 >
能简便的用简便方法计算.
40×95+5    
102×58-116    11×203-3
(200+3)×14    125+4×95    (7×125)×8.
人气:142 ℃ 时间:2020-02-02 18:05:00
解答
①40×95+5
=3800+5
=3805;
②102×58-116 
=102×58-58×2
=(102-2)×58
=100×58
=5800;
③11×203-3
=2233-3
=2230;
④(200+3)×14    
=200×14+3×14
=2800+42
=2842;
⑤125+4×95   
=125+380
=505;
 
⑥(7×125)×8
=7×(125×8)
=7×1000
=7000.
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