On the question it said write 2 7/12 in words and the plural of twelve can be twelves or twelfths, not just twelfths so over all i give it 3.5. Because you can go in contests to win a 32GB Ipad sometimes and sometimes a 330$ Visa card and i payed half the money to get Ixl for a whole year so i get my money back.
Thanks,
Parent -reviews from IXL