题目内容
解比例.
| 8:30=24:X | ||||||||||
|
|
| 0.7 |
| x |
| 14 |
| 5 |
14x=0.7×5,
14x=3.5,
14x÷14=3.5÷14,
x=0.25;
(2)8:30=24:x,
8x=24×30,
8x=720,
8x÷8=720÷8,
x=90;
(3)
| 2 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 2 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
x=
| 36 |
| 5 |
(4)
| 3 |
| 5 |
| 6 |
| 7 |
| 5 |
| 4 |
| 6 |
| 7 |
| 3 |
| 5 |
| 5 |
| 4 |
| 6 |
| 7 |
| 3 |
| 4 |
| 6 |
| 7 |
| 6 |
| 7 |
| 3 |
| 4 |
| 6 |
| 7 |
x=
| 7 |
| 8 |
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