Answer:
1/6 yard of felt
Step-by-step explanation:
Su Ling started with one yard, and she used 5/6 of it, which means five-sixths of the yard of felt get taken away. Now you have the last sixth of the yard left over - 1/6 of a yard of felt. One equals six sixths, so here's the math -
1yd = 6/6 yd
6/6 yd - 5/6 yd = 1/6 yd
