求比值化简比(1) 1 0.25 (2)3

求比值化简比(1) 1 0.25 (2)3 1 2 :2 1 3 (3) 3 4 千米:500米.
2024-12-29 21:32:33
推荐回答(1个)
回答1:

(1)
1
0.25
=
1×4
0.25×4
=4:1;
比值为:
1
0.25
=1÷0.25=4;

(2)3
1
2
:2
1
3

=
7
2
7
3

=(
7
2
×
6
7
):(
7
3
×
6
7
),
=3:2;
比值为:3
1
2
:2
1
3

=
7
2
7
3

=
7
2
÷
7
3

=1.5;

(3)
3
4
千米:500米;
=
3
4
千米:0.5千米;
=(
3
4
×4):(0.5×4),
=3:2;
比值为:
3
4
千米:500米;
=
3
4
千米:0.5千米;
=
3
4
÷0.5;
=1.5.