化简比,并求比值. 0.12:56 5/6:10/9.

问题描述:

化简比,并求比值.
0.12:56                               

5
6
10
9

(1)0.12:56,
=(0.12×50):(56×50),
=6:2800,
=3:1400;
0.12:56,
=3:1400,
=3÷1400,
=

3
1400

(2)
5
6
10
9

=(
5
6
×18):(
10
9
×18),
=15:20,
=3:4;
5
6
10
9

=3:4,
=3÷4,
=
3
4