Превратите в десятичную дробь: 1) 13/20; 2) 3/25; 3) 9/40; 4) 7/16; 5) 97/80; 6) 42/15

ответ:

1) 13/20 = 65/100 = 0,65;
2) 3/25 = 12/100 = 0,12;
3) 9/40 = 225/1000 = 0,225;
4) 7/16 = 4375/10000 = 0,4375;
5) 97/80 = 12125/10000 = 1,2125;
6) 42/15 = 14/5 = 28/10 = 2,8.