Show HN: I made a website to learn and practice mental math

Thanks! I'm not making money off the practice problems though. In fact, the practice app (https://mentalmathpro.com/mental-math-practice) is free.

I think of it more as a short book (it's priced like one) but has the added benefit that you can practice each lesson as many times as you need.

That's why the strategies are gated, they're the most important part. But you do have a point that the first three are the least interesting... Maybe I should offer the first lesson in each category first, or something like that.

That looks like a completely different thing. The article seems to be about learning mental arithmetic tricks like (50+x)^2=(25+x)*100+x^2. https://apkpure.net/zero-hero-math-calculation-pro/com.ankit... for Android has a lot more tricks to learn and practice for free, but it seems to have been removed from the Play Store during the latest developer agreement update purge.

Thank you! If there's anything I can do to improve the site please let me know :)

For example, I'm thinking about adding something like a leaderboard, but am not sure if it'll add clutter.

Thanks :)