Math trick for multiplication

tecmath
tecmath
188.3 هزار بار بازدید - 13 سال پیش - Multiply any number by eleven
Multiply any number by eleven instantly using this math trick.  This trick is also easily done mentally.
To multiply you just write down the number of the right, then start adding neighbouring digits, and pretty soon you have your answer!
This video will make you a master of this math technique in no time at all!

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13 سال پیش در تاریخ 1390/09/08 منتشر شده است.
188,321 بـار بازدید شده
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