例如:2.56在小数点右边有2位数字,所以d=2。
f = 10d
例如:
f = 102 = 100
x × f / f = y / f
例如:
2.56 × 100 / 100 = 256 / 100
例如:
gcd(256,100) = 4
例如:
256 / 100 = (256/4) / (100/4) = 64/25
百分之一等于百分之一:
1% = 1/100
因此,要将百分数转换为分数,将百分数除以100%并约简分数。
例如56%等于56/100,最大公约数为4,等于14/25:
56% = 56/100 = 14/25
百分数 | 分数 |
---|---|
1% | 1/100 |
10% | 1/10 |
11.11% | 1/9 |
12.5% | 1/8 |
14.29% | 1/7 |
16.67% | 1/6 |
20% | 1/5 |
22.22% | 2/9 |
25% | 1/4 |
28.57% | 2/7 |
30% | 3/10 |
33.33% | 1/3 |
37.5% | 3/8 |
40% | 2/5 |
42.86% | 3/7 |
44.44% | 4/9 |
50% | 1/2 |
55.56% | 5/9 |
57.14% | 4/7 |
62.5% | 5/8 |
66.67% | 2/3 |
60% | 3/5 |
70% | 7/10 |
71.43% | 5/7 |
75% | 3/4 |
77.78% | 7/9 |
80% | 4/5 |
83.33% | 5/6 |
85.71 | 6/7 |
87.5% | 7/8 |
88.89% | 8/9 |
90% | 9/10 |