Q3 of 50 Page 6

Which of the following numbers are perfect squares? 100, 1000, 330550, 12345600000

100 is a perfect square because the number of zeros in the end is even.
1000, 330550 and 12345600000 are not perfect squares because the number of zeros in the end is odd.

More from this chapter

All 50 →
1 Which of the following numbers are perfect squares? 11, 12, 16, 32, 36 2 Which of the following perfect squares are squares of even numbers? 121, 225, 256, 1296, 6561 4 Write down the correct number in the box: [For every natural number n, we have
(n + 1)2 - n2 = (n + 1 - n)(n + 1 + n) = (n + 1) + n.]
(a) 232 - 222 = ________
(b) 1012 -1002 = _________
(c) 5512 - 5502 = __________ 5 Write down the correct number in each box:
(a) 652 = 6 x 7(100) + 52 = 4200 + 25 =_________
(b) 752 = 7 x 8(100) + 52 = 5600 + 25 =__________