Double a number easily

We usually double a number from the last number

When we want to double a number, we first multiply the last digit by 2, remember the carry over and then proceed to the previous digit.

Here, we learn a method to double the number from the first digit and thus with practice, we can move to doing it mentally.

 

One Comment:

  1. Your site is very good

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.