To multiply a number by 22 efficiently, first multiply by 2, then multiply the result by 11 using the digit addition method: start with the unit digit, add adjacent digits moving leftward, and carry over tens digits to the left. For example, 4863 × 22 = 4863 × 2 × 11 = 9726 × 11 = 106986.
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10x Fast Calculation II Short Trick for All Students II Crack Quant Exams #youtubeshorts #speedmaths本站添加:
Here we have the ultimate guide to speed maths volume 1 and volume 2 containing over 3,700 practice questions and 350 short tricks to make calculations easier. I will show you a glimpse of that speed maths trick. Suppose you have to do 4 8 6 3 and multiply that by 22.
Instead of multiplying by 22, just multiply by 2. You get 6, then 12 means 2, 1 carry, 17 means 7 1 carry, and then the 9. Now all you need to do is to multiply this by 11. So start with the unit digit, 6, put a slash, 6 + 2, 8, then 2 + 7, 9, and then 9 + 7, 16, and finally the number 9. Now start writing from the unit digit, 6, 8, 9. Wherever there is double digit, retain the unit digit and carry forward the tens digit.
So 9 + 1, 10. Now pick up the calculators and check your answer. To learn all these tricks, just send me a message on WhatsApp. I'll send you how the method to get the copy of this amazing amazing combo. 9896369963 is the WhatsApp number, or you can purchase it through Amazon. The links are given in the description of this short as well.
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