Question

List several methods of multiplication ?






" give example for each " ✌️​

Answer 1

How to Multiply by Powers of 2

You can use today's fourth tip any time you're multiplying one number by another number that's a power of 2. Which means that any time you're multiplying some number by 2, 4, 8, 16, 32, 64, and so on, this is your ticket to mental math bliss. Instead of going through the usual multiplication process, in this case all you have to do is double the number you're multiplying for each power of 2 in the other number.

For example, the problem 12 x 8 is the same thing as 12 x 2^3 or 12 x 2 x 2 x 2. Which means that we can quickly find the answer by continually doubling 12 three times. So the first doubling of 12 gives 24, the second doubling takes us to 48, and the third doubling gives 96. So 12 x 8 = 96.