Thanks for the input everyone. ash- here's my thought (which probably isn't the "right" way). I think the only math homework of high value to my DS are the applied problems- particularly the challenge word problems.

He picks up calculations so easily and fluently, that I could probably teach him the remaining elementary school level calculations in about an hour per week.

The applied work is what he needs more of- puzzles, word problems, analytical problems, etc. He needs to develop strategies to solve these problems such as developing a matrix, lists, etc.

Porosenok96- let's hope that our math program isn't predicated on enormous amounts of busy work. Otherwise, I will be back asking for strategies on homeschooling!