先化简比,再求比值 0.45:0.15 1/6:5/6 21:56就写这么多吧!

问题描述:

先化简比,再求比值 0.45:0.15 1/6:5/6 21:56就写这么多吧!

0.45:0.15
=(0.45×100):(0.15×100)
=45:15
=3:1
=3
1/6:5/6
=(1/6×6):(5/6×6)
=1:5
=1/5
21:56
=(21÷7):(56÷7)
=3:8
=3/8