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With this video you will learn to multiply numbers up to 20X20 in your head!!!
Multiply up to 2 numbers, from 11 to 19 without a calculator!!
Take the 2 numbers, then:
-Place the larger number at the top.
-Take the first number and the last digit of the second number.
-Add the first number and the last digit of the second number.
-Then Multiply the answer by 10 or just add a cero, and keep the answer in your mind.
-Then Multiply the two latest digits of the two numbers, take the answer and...
-Add the first result with the other and voila!!!!
Practice it first!! then you will be able to do it in your mind in just 5 seconds!!!
just using the properties of number values...ok; works only for numbers 11-19 as he said
By mutleyx 1166906918 Reply Spam [+3] Moderate Up Moderate Down Removeother wise, pretty homo video.
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