The sum of 1 1/3 and 1/3 is 1 2/3
1 whole, or 1
One half plus one third equals five sixths or about .8333333.
one third plus one fifth is eight fifteenth
2/3
1/3 plus 2/3 plus 3/3 = two
2/3
2 and 2 thirds
one sixteenth
ONE
One and one twelfth
Two thirds.
Five an one third or 5.333333333333 ditto!