对的画“√”,错的画“×”,并改正
0.4==16÷ = :10= %
: = =1.25=125÷ .
观察图,将阴影部分与整个图形的面积的关系分别用分数、最简整数比、百分数表示:= : = %
21÷ ==28: =( )%=0.875.
25%=3÷ = :16= :24.