To divide an even number by 4, reduce the number to half twice. Remember, this

To divide a number by 5, first, double the number. The resultant number has to

To multiply a number ending in 5 by an even number, double the number that

To multiply an even number by 25, reduce the number to half twice and add

To divide a number that ends in zeroes by another number that ends in zeroes,

To multiply two large two-digit numbers, we subtract them from 100 to make the mathematical

Two large numbers, one of which is even, can be multiplied easily using this method.

To multiply a number by 4, double the number twice.

To find 20 percent of a number, divide the number by 5.

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