I tend to agree with egoldber.
I'd focus more about the counting by 10s from number other than 10, or 5s, etc. than the timed stuff.
We had a dice game when I was a kid that was really fun that helped me with my addition fluency. I'll try to see if I can find it for you.
And for what it's worth, his answer about the symmetry is dead right. I LOVE that answer, and that's a very very mathematical answer. Higher level math. I think he's going to surprise you.
Eta: and remember this, for whom are these timed tests meaningful? I have yet to ever be asked to do basic math under time constraints in my professional life (beyond my certification exams), and I was a math teacher. And, accommodations on tests are made for kiddos like yours.
Last edited by larig; 07-17-2015 at 11:58 PM.
L, mommy to my one and only, super-sweet boy, G 6/08
I'm pro-big bird, and I vote.