Question

Which of the following fractions has the largest value 11/20 10/21 9/19 8/17 or 6/13

Answer 1

11/20

Explanation:

You could turn them all into equivalent fractions, but the common denominator would be 1,763,580. Yuck.

Look at the relationship for the numerators to the denominators. The only numerator that is more than half of its denominator is 11/20. Half of 20 would be 10 and 11 has a larger value than 10, so as a decimal, it would be more than .5. All of the other numerators are less than half, so that they have to less than .5.

If you changed all of the numbers to decimals, you would see that 11/20 has the largest value.

Answer 2

6/13 because 6 is closest to 13