问题
解答题
化简比. 4.2:0.350.35:
|
答案
4.2:0.35,
=(4.2×100):(0.35×100),
=420:35,
=(420÷35):(35÷35),
=12:1;
0.35:
,7 3
=(0.35×3):(
×3),7 3
=1.05:7,
=(1.05×100):(7×100),
=105:700,
=(105÷35):(700÷35),
=3:20;
:1 4
,2 5
=(
×20):(1 4
×20),2 5
=5:8.