怎样简便就怎样算35.6+(12.6﹣4.4) 90÷0.4÷2.5 0.86×15.4﹣14.4×0.865.4÷0.6+(2.3﹣0.46) 7.52×10.1 1.25×0.7×0.8.
3÷ ==0.75=6: = %
3÷ ==0.6=6: = %.
3:5==9: == .
=0.375=12÷ = %=0.45= %= ÷ .
= ÷ = = % ÷ =0.25== %