577299用简便用算
98乘99分之97用简便计算 -
98x97/99=(99-1)97/99=97-97/99=96又99分之2
=111x48+111x52 =111x(48+52)=111x100 =11100
98x97/99=(99-1)97/99=97-97/99=96又99分之2
=111x48+111x52 =111x(48+52)=111x100 =11100
577299用简便用算网!