(1)求比值. 142/5:0.72 4/7:11/7 31/2:21/3(2)化简比. 71/5:0.24 12.6:0.4 20:1.
(1)求比值.
(2)化简比.
14
|
| 3
|
7
| 12.6:0.4 | 20:1. |
数学人气:790 ℃时间:2019-08-19 03:42:07
优质解答
(1)1425:0.72,=14.4÷0.72,=20;47:117,=47÷87,=12;312:213,=72÷73,=32.(2)715:0.24,=(7.2×50):(0.24×50),=360:12,=(360÷12):(12÷12),=30:1;12.6:0.4,=(12.6×5...
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