You can square the numbers ending with Zero very easily using this rule- This is really simple.
- Leave the last Zero and sqaure the numbers left uesing the rule, I gave earlier. Or it is single digit say 1-9 it is staright forward
- Add double zeros after the number
FOr example you need to square a number say 40. You will do it like this square of 4 is 16 and add 2 zeros after 16. The result is 1600
If you need to square the number 350 – Then you will sqaure 35 using this rule – Click Here . The number is 1225 add 2 zeros it becomes 122500.[ad#Post-Bottom]