求比值①126:84 ②0.4:0.6 ③5 1 4 :4 1 5 ④0.36:1.2 ⑤28 1 2

求比值①126:84 ②0.4:0.6 ③5 1 4 :4 1 5 ④0.36:1.2 ⑤28 1 2 :2 1 4 .
2026年09月10日 02:12
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①126:84,
=126÷84,
=1.5;

②0.4:0.6,
=0.4÷0.6,
=
2
3


③5
1
4
:4
1
5

=5
1
4
÷4
1
5

=
21
4
÷
21
5

=
5
4


④0.36:1.2,
=0.36÷1.2,
=0.3;

⑤28
1
2
:2
1
4

=
57
2
÷
9
4

=
114
9