98分之95乘99用简便运算急用啊

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98分之95乘99用简便运算急用啊
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98分之95乘99用简便运算急用啊
98分之95乘99用简便运算
急用啊

98分之95乘99用简便运算急用啊
95/98 * 99
=(98-3)(98+1)/98
=(98^2 - 2*98 -3)/98
=98-2- 3/98
=96 - 3/98
=95 + (1-3/98)
=95+95/98
=95又98分之95

(95/98)*99=(95/98)(98+1)=(95/98)*98+(95/98)*1=95+95/98

95/98*99
=95/98(98+1)
=95+95/98
=95又95/98

(95/98) * 99=(95/98)*(100-1)=(9500-95)/98=9405/98

95/98*(100-1)=9500/98-95/98=9450/98=95又95/98