How to multiply ANY number by 11 instantly

[KowboyUSA]

That's pretty slick. For 11 times problems I usually add a zero ( 10 x 213 = 2130 ) then for 1 times part add the original number ( 2130 + 213 = 2343 ).
* Of course it doesn't really matter how I do it, you're always going to be way faster than me!

[mathematix-rodcast]

To convert from lbs to kilos, you can divide by two and then subtract 10% from that quotient.

Example 100 lbs

100 /2 =50
50-5=45 kilos

The more precise answer is 45.45 kilos.

200 lbs
200 /2 =100
100-10=90 kilos
Actual answer is closer to 90.9 kilos.

[tscott]

Cool video! Great technique. Your voice reminds me of Bruce's voice in finding Nemo.

[marksuckerburg]

A few months ago I asked you to do this topic and you did it thank you for doing it.

[stclone]

this is a really really awesome trick, thanks man

[wayneedmondson]

Great one.. so simple.. once you explained it. Excellent! Thanks for sharing and Thumbs up!!

[rannvijusingh]

Amazing video... Best part is your explanation

[jameslabs]

Fast with paper and without- subtraction and division techniques. By the way, your new series’s of videos have better audio. Thank you for that.

[varunprakash]

Multiply of 11any number Explanation concept in easy way 👍👍👍👍👍

[srivenkateswara]

❤❤Excellent sir i never seen this type of mathematical Teacher really hats off to you sir.Thanks. For making difficult thing to easy

[DRCK]

My daughters teachers are going to hate me hahaha.

Can you do a video explaining why, the sum of the parts of anything x 9 = 9. Example: 3x9=27, 2+7=9. Or 46×9 = 414, 4+1+4=9

[donnadaly]

That moment when you keep getting the right answer and still don't know why. 😂

[shayneabejero]

me who mastered this the whole day then totally forget the whole process the next day 👁️👄👁️

[tcconnection]

Interesting that you call the ones columns units

[astrid]

I understood how to do it with only seeing the thumbnail

[Fakhori.M]

Multiply by 10 then add the same number to the result... much easier and faster tbh... but I always loved this trick anyway

[zerotoleranceforsataniceli]

Isn't it simpler to do
10 x 213 = 2130
plus
1 x 213 = 2343
this way I'm still using my ability to do simple addition and that means my basic skills are not lost.

If I rely on clever "tricks" I can forget the basics.

[deekay]

Why is my calculator programmed with all of these shortcuts, but I’m not? No fair!

[randevanjali]

Please tell me one by one not the answer I wnt to know the whole process

[malekchihi]

What about numbers with more then 3 digits?