3/22 as a decimal would be 0.13636363636.... It is also repeating. I'll tell you a little trick, to find the decimal of a fraction all you have to do is divide. So for instance, 3 divided by 22 = 0.136363636 etc. To know if it is a repeating decimal or not, you can just simply tell, if the same numbers are repeating over and over it's a repeating decimal like in this case. Hope that helps! :)