1 除以一個數等于乘以他的倒數
17/121 *88/51 = 88/3/121 = 8/3/11 = 8/33
49/91 * 13/14 = 49/7/14 = 1/2
5/7 * 2/3 *1/3 = 5*2/7/3/3 = 10/7/3/3 = 10/63
以此類推
2 同乘以10化為整數,再約分即可,比如
0.6/1.5 = 6/15 = 2/5 = 0.4
以此類推
1 除以一個數等于乘以他的倒數
17/121 *88/51 = 88/3/121 = 8/3/11 = 8/33
49/91 * 13/14 = 49/7/14 = 1/2
5/7 * 2/3 *1/3 = 5*2/7/3/3 = 10/7/3/3 = 10/63
以此類推
2 同乘以10化為整數,再約分即可,比如
0.6/1.5 = 6/15 = 2/5 = 0.4
以此類推