Question

What must be added to 269 to make the
result a perfect square ?
(A) 13
(B) 20
(C) 55
(D) 44​

Answer 1

Estimate the perfect square:

√269 = 16.4 (nearest tenth)

.

Find the next perfect square:

17 x 17 = 289

.

Find the number that needs to be added:

289 - 269 = 20

.

Answer: We can add 20 to 269 to make it into a perfect square.