Question

What least number should ne added to 1330 and so be perfect square?

Answer 1

39 is the least no. added to 1330 to make perfect square of 37.

Answer 2

From  the question we know that 1300 is not a perfect square nos.

First find out the square root of 1300 by division method:

shown in the attached file

Now

square of 36=1296 is< than 1300

Nearest square number to 1300 is (37)^2.

(37)^2 = 1369

1369 - 1300 = 69

Therefore. 69 must be added to 1300 to make it a perfect square.  ANS