Question

Vassil rounded to the nearest half to estimate the product of 5/8 and 8/9. How do the estimated and actual products compare?

Answer 1

Our actual answer is 1/18 greater than our estimate

1/2 < 5/9

Explanation:

5/8 is close to 1/2

8/9 is close to 1

1/2 * 1 = 1/2

Our estimate is 1/2

Actual answer

5/8 *8/9

Rewriting

5/9 * 8/8

5/9

How close

5/9 - 1/2

Getting a common denominator

5/9*2/2 - 1/8 *9/9

10/18 - 9/18

1/18

Our actual answer is 1/18 greater than our estimate