九十九乘九十九又九十九分之九十八（用简便方法，有详细的过程！）

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99×99又98/99
=99×99+99×98/伍高源念游99
=99×（100-1）腔态+98
=9900-99+98
=9900-1
=9899

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99*(99+98/99)
=99*99+99*98/99
=99*(100-1)+98
=99*100-99+98
=9900-1
=9899

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99*（99+98/99）
=99*（100-1/99）
=9900-1
=9899

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99*(99+98/99)
=99*99+99*98/99
=99*(100-1)+98
=99*100-99+98
=9900-1
=9899

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