Download "The Easiest Shortcut for Multiplying Any 2-Digit Number by 11... #shorts"

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00:00:00
it's super easy to multiply a one-digit
00:00:03
number by 11. all you do is copy that
00:00:06
digit twice but multiplying a two digit
00:00:09
number by 11 may seem trickier however
00:00:14
there is a super simple trick for that
00:00:16
also to multiply any two digit number by
00:00:20
11 quickly you can just take those two
00:00:23
digits let's say 23 for example and
00:00:27
sandwich in between them there's some
00:00:30
two plus three is five in this case and
00:00:34
if that sum ever is more than ten we
00:00:37
just carry that digit to the next place
00:00:40
like there's sevens their sum is 14 so
00:00:44
we get a four and add one to that seven

Description:

It's easy to multiply a 1-digit number by 11, but not everybody knows this easy shortcut for multiplying any 2-digit number by 11! Also make sure to check out my latest @ComboClass episode about the base "balanced ternary" here: https://www.youtube.com/watch?v=yfQVL0_POKg Links to a few recent shorts on the Combo Class channel you may have missed: https://www.youtube.com/shorts/Hk6sE9-M1mA https://www.youtube.com/shorts/blqO-RaKrMI https://www.youtube.com/shorts/zhOiUNQtGF4 Special thanks to my Patreon supporters: Max, George Carozzi, Peter Offut, Tybie Fitzhugh, Henry Spencer, Mitch Harding, YbabFlow, Joseph Rissler, Plenty W, Quinn Moyer, Julius 420, Philip Rogers, Ilmori Fajt, Brandon, August Taub, Ira Sanborn, Matthew Chudleigh, Cornelis Van Der Bent, Craig Butz, Mark S, Thorbjorn M H, Mathias Ermatinger, Edward Clarke, and Christopher Masto, Joshua S, Joost Doesberg, Adam, Chris Reisenbichler, Stan Seibert, Izeck, Beugul, OmegaRogue, Florian, William Hawkes, Michael Friemann, Claudio Fanelli, and Julian Zassenhaus. (To join that list of people supporting this channel, and get cool bonus content, check out the Combo Class Patreon at https://www.patreon.com/comboclass By the way, I got this ferrofluid lamp from one of my subscribers and Patreon supporters (George Carozzi) at my private mailbox. If YOU want to send me anything (including old extra clocks/dice/etc.), here's my private mailbox address (not my home address). If you're going to send anything, please watch this short video first: https://www.youtube.com/watch?v=_-gSvbvO8W4 Domotro 1442 A Walnut Street, Box # 401 Berkeley, CA 94709 Links: Main channel: www.youtube.com/comboclass Patreon: https://www.patreon.com/comboclass Discord: https://discord.com/invite/cHHvDcPPuc Subreddit: https://www.reddit.com/r/comboClass/ If you want to reach out to possibly collaborate or help with Combo Class somehow, my email is: combouniversity (at) gmail (dot) com Combo Class, taught by Domotro, is a crazy educational show where you can have fun learning rare things about math, science, language, and more! This is the channel for Domotro's Combo Class bonus videos, shorts, and livestreams - make sure you're also subscribed to the main @ComboClass channel where the main episodes go! DISCLAIMER: any use of fire, tools, or other science experiments in this series is always done in a safe and professional way. Do not try to copy any actions you see in this series yourself.

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