Question

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！）

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

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