1.3/20=.....% 2.13/20=......desimal 3.13/2......63% 4.38%=.....desimal 5.4 1/2+1/6=....... 6.12%+2 1/4=..... 7.0,75-27%=...... 8.0,54-0,3=.... 9.3/7×1 1/5=.....

1) 3/20×5 = 15/100 = 15%
2) 13/20×5 = 65/100 = 0,65
3) 13/2×50 = 650/100 = 650% > 63%
4) 38/100 = 0,38
5) = 9/2+1/6 = 27+1/6 = 28/6 = 4 4/6 = 4 2/3
6) =12/100+9/4 = 12+225/100 = 237/100 = 237% = 2,37
7) = 75/100-27/100 = 48/100 = 48% = 0,48
8) = 54/100-3/10 = 54-30/100 = 24/100 = 0,24
9) = 33/35
10) =15/100×24/10 = 360/1000 = 36% = 0,360