How to find Square of a number in seconds? Trick to find square of a number.

How to find Square of a number in seconds? Trick to find square of a number.

To find the value of square of a number you have to just remember the square of 1 to 10. That's all the basic requirement of this trick.

1. For 11 to 19

Let's find the square using an example:
14 : It is 4 more than 10 (14-10=4) So the square=14+4 | 4's Sq = 18 | 16 = 18+1 | 6 = 196
(Note: If after | is exceeds one digit then rightmost digit will be there but other will be added before | )

2. For 20 to 29

23’Sq = 2 * (23+3) | 3’Sq= 2 * (26) | 9 = 52 | 9 = 529

3. For 30 to 39

37’Sq = 3 * (37+7) | 7’Sq= 3 * (44) | 49 = 132 | 49 =132+4 | 9 = 136 | 9 = 1369

3. For 40 to 49

49’Sq = 4 * (49+9) | 9’Sq= 4 * (58) | 81 = 232 | 81 =232 + 8 | 1 = 240 | 1 =2401
(Note: If after | is exceeds one digit then rightmost digit will be there but other will be added before | )

Similarly, you can use this method up to 99.

If any problem you face please comment here.