An Easy, Yet Impressive Mental Math Trick You Don’t Know Yet (vol.1)

What if I asked you to multiply 43 by 11? How long would it take you? Give me a few minutes of your time and I’ll show you have to do it in a few seconds.

As it turns out, multiplying a two, even three, digit number by 11 is much more simple than you think. Let’s take the 43 x 11 example from earlier. The answer is, of course, 473. What about…

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Amy Hayes

Amy Hayes

All things software, math, and tech