问题
解答题
化简比 15:24
0.l3:3.9. |
答案
(1)15:24,
=(15÷3):(24÷3),
=5:8,
(2)
吨:750千克,1 2
=500千克:700千克,
=(500÷100):(700÷100),
=5:7,
(3)
:3 4
,2 5
=(
×20):(3 4
×20),2 5
=15:8,
(4)0.l3:3.9,
=(0.13÷0.13):(3.9÷0.13),
=1:30.