Answer:
Gross estimate: 1/2
Good estimate: 1/3
Exact answer: 29/88
Explanation:
You ask for an estimate.
7/8 is close to 1
6/11 is close to 1/2
1-1/2 = 1/2
This is a gross estimate.
The exact answer is found by getting a common denominator of 88
7/8 *11/11= 77/88
6/11*8/8 = 48/88
77/88 -48/88 =29/88
This is just a little less than 1/3
Rounding our answer 29 is close to 30 and 88 is close to 90
30/90 = 1/3