比0.1大、比0.4小的小数只有2个. .(判断对错)
0.8== ÷ =.
3:8=24÷ = %
:10== ÷20= %=0.7=.
= ÷ === (小数)= (百分数)= (成数)
0.16==2÷ =8: = %