(1)求比值60:424.8:7.538:9203.5:825(2)化简比51...

发布时间：2019-08-02 20:05:59

(1)求比值
60:424.8:7.538:9203.5:825(2)化简比51:6872160.75:3.750.25:14.

推荐回答

60:42=60÷42=
10
7
;4.8:7.5=(4.8×10)÷(7.5×10)=48÷75═
48
75
=
16
25
;
3
8
:
9
20
=
3
8
÷
9
20
=
5
6
;3.5:8
2
5
=
35
10
:
42
5
=
35
10
÷
42
5
=
35
10
×
5
42
=
5
12
;(2)51:68=(51÷17):(68÷17)=3:4;
72
16
=(72÷8):(16÷8)=9:2;0.75:3.75=(0.75×100):(3.75×100)=75:375=1:5;0.25:
1
4
=0.25:0.25=(0.25×100):(0.25×100)=1:1.
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