Well, besides all the calculators apps available for iPad, there is a built-in one also. Like the flight tracker, it’s a little bit hidden. If you open the spot

Well, besides all the calculators apps available for iPad, there is a built-in one also. Like the flight tracker, it’s a little bit hidden. If you open the spotlight search and type some math it will give you the answer. I use ⌘+Space to open it on my iPad and it works great!