Выразите в сотых долях следующие дроби: 1/2;3/4;2/5;7/10;3/20;17/25;9/50.

1/2 = 50/100; 3/4 = 3/4 * 25/25 = 75/100; 2/5 = 2/5 * 20/20 = 40/100; 7/10 = 7/10 * 10/10 = 70/100; 3/20 = 3/20 * 5/5 = 15/100; 17/25 = 17/25 * 4/4 = 68/100; 9/50 = 18/100.