35×99的简便运算方法



35x99
=35x(福沪弟疚郗狡甸挟鼎锚100-1)
=35x100-35
=3500-35
=3465
=35x100-35
=3500-35
=3465
35*99
=35*(100-1)
=35*100-35*1
=3500福沪弟疚郗狡甸挟鼎锚-35
=3465
这是我们老师讲的方法,你可以借鉴一下。O(∩_∩)O
先35乘100,再减35即可。
35乘以100再减去35
100乘以35 得3500 再减去35得3465
35*100-35*1
=(40-5)(100-1)=
35×99=35×(100-1)=3500-35=3465
35*99=35*(100-1)=3500-35=3465
35*100-35*1


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