To multiply numbers ending in 0, first, multiply the numbers without including the zeros. Once

To multiply a number by 9, the number should be multiplied by 10 first. Once

You can calculate the square of two-digit numbers ending in 5 by following this simple

To multiply an even number by 5, add a ‘0’ to half of the number.

To multiply two-digit numbers by 11, add the digits in the tens and units place

To subtract a three-digit number from 1,000 every number has to be subtracted from 9

The addition of two-digit numbers can be performed in a simple way by splitting one