分数小数互换
| 分数 | 百分比 | 分数 | 百分比 |
|---|---|---|---|
| 1/2 | 50% | 1/3 | 33.3% |
| 1/4 | 25% | 1/5 | 20% |
| 1/6 | 16.7% | 1/7 | 14.3% |
| 1/8 | 12.5% | 1/9 | 11.1% |
| 1/10 | 10% | 1/11 | 9.1% |
| 2/3 | 66.7% | 3/4 | 75% |
| 3/8 | 37.5% | 5/8 | 62.5% |
| 2/7 | 28.6% | 3/7 | 42.9% |
| 5/6 | 83.3% | 2/9 | 22.2% |
| 4/5 | 80% | 7/8 | 87.5% |
| 9/10 | 90% | 11/12 | 91.7% |
| 13/15 | 86.7% | 17/20 | 85% |
| 19/25 | 76% | 23/50 | 46% |
| n/9 | nn.n% | 1/15 | 6.7% |
| 1/12 | 8.3% | 1/13 | 7.7% |
| 1/14 | 7.1% | 1/17 | 5.9% |
| 1/19 | 5.3% | 1/20 | 5% |
| 1/18 | 5.6% | 1/21 | 4.8% |
次方公式
| 数字 | 二次方 | 三次方 |
|---|---|---|
| 11 | 121 | 1331 |
| 12 | 144 | 1728 |
| 13 | 169 | |
| 14 | 196 | |
| 15 | 225 | |
| 16 | 256 | |
| 17 | 289 | |
| 18 | 324 | |
| 19 | 361 |