Math Trick: Multiplying Trick

In this math trick video we look at an easy way to multiply numbers where the ten's digit is the same and the one's digit adds up to 10.

To practice this trick or watch other math trick videos check out the website at www.themathworld.com

Category:

Education

Tags:

• math tutorial
• learn
• math tricks
• Multiplying Trick

[JTChess]

Lol this video's length is 3:14.. pi!!

[L1U6L9U00]

awesome vid i finally learned something usefull xD thnxs xD

[abhi1jot]

not even that when we multiply 12 X 17 with his technq ans comes 214.. where as answer is 204

[AQWraghd99]

@JTChess YEAAAH!!!

[jades690]

at the first one why did he add a 1 ??

[ChronusXIII]

Very limited math the sum of the tenth digit have to be 10

[MrVaibhav244]

this person and video is awesome

[Starshock607]

think of any counting #.multiply it by 2. Add 12. divide it by two. take the # u started with and subtract it with the # you have now. 6. this trick will always work. follow the steps and no matter what number u r thinking of it will always come out as half of the number u add(step3).

[granyk]

Thank you. I home school and this will save time. Thanks

[agostinho1234]

man, this gonna help me out in math and doing it in my head