LogFAQs > #913160910

Dikitain posted...

Doing math in your head is kind of pointless nowadays, that is what calculators are for. I mean yea you should know your addition and multiplication tables and what those systems actually do, but getting into long addition/multiplication can all be done quicker by computers.

The actual computation is much faster, but that doesn't necessarily mean it's faster to use computers.
Even with calculators on phones, you still have to take your phone out, unlock it, open the calculator, and input the numbers in order to take advantage of its ability to process the arithmetic near-instantly. For casual, everyday math, the more you can handle quickly in your head, the less time you have to spend setting up a computer to do it for you, and that's potentially a major time-saver. Ideally, one should only need a calculator for more complex stuff.