括号里最大能填几?40× <28560× <17070× <36090× <80030× <21780× <330.
9:24=3: =3÷ == %.
:100=15÷ = %==0.25= 折.
3÷ === ÷24≈ (保留两位小数)
÷8=()=0.625= %= .(最后一空填最简整数比)
0.6= :10=18: = %= ÷40=6: = ÷60.