先化简比,再求比值:58:15=0.8:34=1.5:35=
(1)
:15=(
×
):(15×
)=1:24;
:15=
÷15=
;
(2)0.8:
=(0.8×20):(
×20)=16:15;
0.8:
=0.8÷
=
;
(3)1.5:
=(1.5×
):(
×
)=5:2;
1.5:
=1.5÷
=
;
故答案为:1:24,
;16:15,
;5:2,
.
5 |
8 |
5 |
8 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
1 |
24 |
(2)0.8:
3 |
4 |
3 |
4 |
0.8:
3 |
4 |
3 |
4 |
16 |
15 |
(3)1.5:
3 |
5 |
10 |
3 |
3 |
5 |
10 |
3 |
1.5:
3 |
5 |
3 |
5 |
5 |
2 |
故答案为:1:24,
1 |
24 |
16 |
15 |
5 |
2 |
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