Basic grammar tells us that it should be "thirds" since two indicates a plural. Hence, it is two thirds.
Chat with our AI personalities
One third plus one third equals two thirds.
one third!!!!!!!!!!!!!!!!!!!!!! two thirds!!!!!!!!!!!!!!!!!!!!!!!!!! two thirds!!!!!!!!!!!!!!!!!!!
Three and two thirds divided by one third = 11/1 or 11
One third
thiry three and one third