So, I found this fun mathematical project on http://projecteuler.net/problem=1:

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000.

I solved it by using Scratch.

I decided to “polish” my code and make a Scratch project about it. You can find it here.

It features
- the question,
- the way of solving (see inside, it's all commented)
- a few extras (lists/ part-solutions)
- and the final solution (hidden with a spoiler button).

It's be cool if you'd try to solve this problem, too and then tell me about how you solved this

bump Maybe I'll make one more…