Multiplication by 11 easily

Multiplying by 11 is an easy task for one digit numbers.But if we have a big number to multiply by 11, it will be a hard task. This article shows you how to multiply by 11 easily.

Steps to follow

1. Write multiplicand last number in right side corner. It is the last digit of the answer

2. Add right neighbor to each number from your left to right

3. Write first number as the first number.

You may little confuse.So we are going to show an example

Multiply 1434 by 11

Last number = 4

Add right neighbor one by one = 1434

1434
11
…………..
3+4=7
4+3=7
4+1=5

Middle numbers 577

First number =1

So answer is 15774

…………………………………………………………………..

Lets go for a long number example .Suppose you need to multiply 3451583 by 11

Lets have a look at this.

Last digit is 3
Add neighboring numbers from right to left.

8+3=11 Next Digit 1 (One remains)
5+8 +1 (Previous Remains)=14 Next Digit 4 (One remain)
1+5 + 1 (Previous Remains) =7 Next Digit 7
5+1 =6 Next Digit 6
4+5 =9 Next Digit 9
3+4 =7 Next Digit 7

First digit is 3

So the answer is 37967413

You can use any long number to use this method to multiply by 11.

mathsmagics

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