Question Text
Question 1 :
Without adding, 1 + 3 + 5 + 7 + 9 =
Question 3 :
Is 408 a perfect square? Find out without doing any calculation.
Question 4 :
Find the square root of 1764 by the Prime Factorisation Method.
Question 5 :
What is the square root of 169? Find by the method of repeated subtraction.
Question 6 :
How many digits are the in the square root of 4489? Find out without calculating square roots.
Question 7 :
Observe the following pattern and find the missing digits:-
$11^{2}$=121
$101^{2}$=10201
$1001^{2}$=1002001
$100001^{2}$=1......2.......1
$10000001^{2}$=.................
Question 8 :
In a right angle triangle ABC, $\angle B$ = 90°. If AB = 6 cm, BC = 8 cm, find AC.
Question 11 :
By repeated subtraction of odd numbers starting from 1, find whether 36 is a perfect square or not? If it is, then find it's square root.
Question 15 :
How many digits are the in the square root of 64? Find out without calculating square roots.
Question 17 :
What is the square root of 2304? Find out by division method.
Question 19 :
What is the least number which must be added to 525 so as to get a perfect square?