The fraction 7 8 is really close to 1 , so Yvonne could estimate that she needs approximately yards of fabric per dress. So, to make 5 dresses she would need approximately yards of fabric.
Answer: She can round 4 7/8 as 5 yards of material. and since she's making three, multiply 5 yards by 3 dresses. that equals 15 yards of material needed.