用自己喜欢的方法计算.(1)1.73+1.73×3.5+5.5×1.73 (2)3.5×[(1﹣0.05)÷1.9](3)68×0.11+8.9×6.8 (4)8.88÷3.7×1.25.
3÷ ==0.6=6: = %.
3:5==9: == .
=0.375=12÷ = %=0.45= %= ÷ .
= ÷ = = % ÷ =0.25== %
在括号里填上合适的数. 6÷12=7÷16=40÷82= ÷5=11÷ = ÷ =.