1+7/100
=100/100+7/100
=107/100
=1又7/100
同理:1一7/100
=100/100一7/100
=93/100
=0、93
答1一7/100=0.93,1+7/100=1又7/100
首先要把他们的分母,换算成一样才能进行加减,比如一加白分八,首先要把一换算成100%再加百分之八,就等于百分之108
1+7/100
=100/100+7/100
=107/100
=1又7/100
同理:1一7/100
=100/100一7/100
=93/100
=0、93
答1一7/100=0.93,1+7/100=1又7/100
首先要把他们的分母,换算成一样才能进行加减,比如一加白分八,首先要把一换算成100%再加百分之八,就等于百分之108