My kids love playing these Monster math games. Check out these great ideas for making math fun, with ideas for children from toddlers to ten. (Idea to use with Benji's speech? Feed his word cards to a monster!
Kelly's Kindergarten: Can't get much simpler: beads, pipe cleaner and "number flags" glued to the top create this easy peasy counting center. To stick the numbers to the top, blank white labels can be folded in half over the top of the pipe cleaner.
Home School Math Games - Scrambled Eggs Math! We did this with smaller numbers for my 6 yr old and to make it fair, I got a point if he got it wrong he got one when he was right and the first one to ten won.