I don't have this game, but I'll be getting it soon, I just wanted to tell everyone my funny story. My friend has this and we were playing 4 player and you get 30 (I think) easy sums to do, my friends were done in like less than a minute and on my first try it took me over 4 minutes to do ^_^; It's partially down to not being able to write legibly though, but mainly due to the fact that I suck at math.
Based on that game I think my brain age is probably about 85