Ответ: 1) 19/100. 2) 97/100. 3) 1 5/10. 4) 1 2/9. 5) 19/24. 6) 17/27.
1) 1/10 + 9/100 = 10/100 + 9/100 = 19/100
2) 27/100 + 7/10 = 27/100 + 70/100 = 97/100
3) 4/5 + 7/10 = 8/10 + 7/10 = 15/10 = 1 5/10
4) 2/3 + 5/9 = 6/9 + 5/9 = 11/9 = 1 2/9
5) 15/24 + 1/6 =15/24 + 4/24 = 19/24
6) 5/9 + 2/27 = 15/27 + 2/27 = 17/27