要使□10÷5的商是两位数,□里最大应填 .要使□708÷6的商是四位数,□里最小应填 .
:30=30÷ === (小数)= 折.
75%= (小数)= (成数)= (折数)= : .
:40= =36÷ =0.45= .
0.6= : = ÷15= %.
12: == %= ÷4=0.75.