Assignment Class 8 on Square Roots Questions and Answers Paper Exam (For CBSE, ICSE, IAS, NET, NRA 2023)
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Question 1
Find the square root of each of the following numbers by using the method of prime factorization:
(a) 121
(b) 441
(c) 625
(d) 729
(e) 1521
(f) 2025
(g) 4096
(h) 5776
(i) 8100
(j) 9216
(k) 11236
(l) 15876
(m) 18496
Question 2
Find the smallest number by which following number must be multiplied to get a perfect square. Also, find the square root of the perfect square so obtained.
(a) 1008
(b) 1280
(c) 1875
Question 3
676 students are to be sit in a hall such a way that each row contains as many students as the number of rows. Find the number of rows and the number of students in each row.
Question 4
What could be the possible ′ one ′ s digits of the square root of each of the following numbers?
(i) 1801
(ii) 856
(iii) 1008001
(iv) 6577525
Answer:
1 and 9
Explanation: Since and give 1 at unit՚s place, so these are the possible values of unit digit of the square root.
4 and 6
Explanation: Since, and , hence, 4 and 6 are possible digits
1 and 9
5
Explanation: Since, , hence 5 is possible.
Question 5
The students of a class arranged a gift for the class teacher. Each student contributed as many rupees as the number in the class. If the total contribution is ₹ 1521. Find the strength of the class.