Multiplication: Easy Way

Easy way of multiplying numbers ending with 5 by itself.

If we multiply some number ending with 5, suppose 25 by 25, then first multiply the last digits 5 by 5 which gives 25 and then multiply the first digit 2 by a number 1 more than 2 which is 3, this gives (2*3=6). so, the answer is 625.

Another example could be 85 multiplied by 85. Again, last digits 5*5=25 and then the first digit 8 multiplied by a number 1 more than 8 i.e. 9 gives us (8*9=72). So, the answer would be 7225.