7
1 = 5 fifths 2 = 10 fifths 3 = 15 fifths 4 = 20 fifths
50
10
10
10
10 of them.
2 = 10 fifths and 0.2 = one fifth so in total 2.2 = 11 fifths.
Well, two whole are 10 fifths, and add them to the 3 you allready have, you get 13 fifths.
thirteen 2 = 10/5 then 10/5 + 3/5 = 13/5
Ten fifths make two wholes.
Twelve There are 5 fifths in 1, so there are 10 fifths in 2 and add 2 to that to get 12