Math problems are organized into 86 levels (and increasing), ranging from
simple ordering of numbers to addition and subtraction
(with/without carry / borrow, word problems, using whole numbers as well as those with
fractions or decimals), multiplication,
division (simple as well as long), fractions, time , algebra ,
geometry , etc. Start with a level suitable for you and
practice your way up. Given below is an annotated screen shot of the problem interface.