| First of all, apologies if I've made any mistakes. I could only find a binary addition/subtraction calculator to check my answers against on the internet - most of it was done in my head which is rather more prone to errors. I'll fix any mistakes people find asap. Secondly, I've attempted to aim the time limit to be quite tight. Hopefully it should be tricky to finish but possible if you have very good mental arithmetic. Let me know if you think I've gone too far either way but it should become self-evident from the scores after a few plays. |
The Nine Planets 
Digits of Pi 
Multiplication Table
