Another way to use Math Notes is using the pen tool (you can find this on top of your keyboard) that you can see on apps like Calculator and Notes, and writing out your math expressions horizontally.

Tired of juggling between Apple Notes and Calculator? A math feature in iOS 18 lets you solve equations instantly with just a quick settings tweak.

iOS/Android/Desktop: Default calculator apps suck. They work like a traditional handheld calculator, which only displays one value at a time and can only do basic math. If you want to do anything ...

My geometry students always ask me if they can use their calculators. Always.