一个小数,先把它扩大到原来的100倍,再把小数点向左移动三位,结果是0.327,原数是 .
=2: =4÷ = %=0.2.
12÷ = :12=0.75= = %
0.75=6÷ = :12== %
1.75=7÷ ==28÷ =.
= ÷60=2:5= %= 填小数.