On small CPUs, you often don’t have a multiply or divide instruction. Of course, good programmers know that shifting right and left will multiply or divide by a power of two. But there are always ...

In this video I share a simple old carpenters trick for dividing a board into equal parts without doing awkward decimals. Instead of calculating 8,35 divided by 3, I angle the ruler until an easy ...

You probably haven’t had to do longhand math in years, but you do mental math every day. Or maybe you google math problems ten times a day, because you’ve forgotten how to do any math beyond your ...

Test your brain with this tricky math question! Most people get it wrong at first glance. Divide 100 by half, add fifty, and see if you can solve it correctly. Are you up for the challenge?

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