A computer has to do with Mathematics, because on a Macintosh, you can download Sketch-Up, for example. Here, you can build your own 3D buildings, etc. This has to do with geometry. Another example...
Start > All Programs > Accesories > Calculator.
You can also do:
Start > Run > Type (without "'s) "calculator".
Google also has a built in calculator. You can ask Google any question, eg...
Not necessarily. It depends what you ultimately want to do with computers. If you want to be a computer programmer then yes, strong maths skills would be advantageous if not essential. If you want to...