题目内容
求比值.
(1)
:
; (2)5:0.75.
(1)
| 3 |
| 7 |
| 5 |
| 21 |
(1)
:
=
÷
=
;
(2)5:0.75
=5÷0.75
=
.
| 3 |
| 7 |
| 5 |
| 21 |
=
| 3 |
| 7 |
| 5 |
| 21 |
=
| 9 |
| 5 |
(2)5:0.75
=5÷0.75
=
| 20 |
| 3 |
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