1.
1) 1/3
2) 2/7
3) 1/8
4) 10/11
2.
1) 3 1/19 > 1 12/19
2) 5/15 > 1/15
3) 1/2 = 1/2
4) 7/6 < 1 3/4
5) 1 1/8 > 1/2
5. 60:4 = 15
15 * 3 = 45
7. 91/6 = 15 1/6
8. 5:5 = 1, 10:5 = 2:2 = 1
5*2*7 = 70
9. 107+ 415 * 31 - 865
12972 - 865 = 12107
10. 4,7 + 0,2 = 4,9