在小数中添上“0”,小数的大小不变. (判断对错)
12: ==0.6=48÷ .
:30=30÷ === (小数)= 折.
75%= (小数)= (成数)= (折数)= : .
:40= =36÷ =0.45= .
0.6= : = ÷15= %.