grades 1-3, addition. Though I think I found them all and now I am onto subtracting (I have to make new fact cards and I don't have the old ones to refer to and I don't have my books!) for subtraction I have the subtracting zero, subtracting ones, subtracting twos, subtracting the doubles, subtracting using the doubles plus ones and subtracting using sums to ten. I think I am missing something there too though...