Answer :

HolmesNWatson
The best thing to do for this question is to find a common denominator, and the best way to do this is to list all of the multiples and find the smallest common one.
8- 8, 16, 24, 32, 40, 48
20- 20, 40, 60

In this, 40 is the lowest, so you have to multiply 5/8 by 5 at the top and bottom, and this gives you 25/40. You have to multiply the second fraction by 2, and this becomes 22/40.
Therefore, the larger fraction is 5/8.
The alternative method is to turn them into decimals and compare them this way. 5/8= 0.625 & 11/20= 0.55

Hope this helps
apologiabiology
so to add fractions, the bottom number (denomenator) must be the same

we can change the fractions without really doing anything to them by using this concept: 1/2=4/8 because 4/8=1/2 times 4/4 (and 4/4=1)

so we list the number that 8 and 20 can multiply into by factoring them so

8=2*2*2
20=2*2*5
so we group the number so
2*2*2*5 or 40

multiply 5/8 by 5/5 and get 25/40
multiply 11/20 by 2/2 and get 22/40
25/40>22/40 so 5/8 is bigger