CBSE Class 8 Mathematics Square And Square Roots Worksheet Set C

Question. Which of the following is a four digit perfect square number whose first two dig its and last two digits taken separately are also perfect squares ?
(A) 1681
(B) 1636
(C) 3664
(D) 6481
Answer : A

Question. If √16/49 = x/49 , find the value of 'x:
(A) 4
(B) 7
(C) 16
(D) 28
Answer : D

Question. Evaluate 36.1/102.4
(A) -32
(B) 72
(C) 19/32
(D) 29/62
Answer : C

Question. A group of students decided to collect as many rupees from each member of the group as is the number of members. If the total collection amounts to ~ 2209, what is the number of members in the group?
(A) 37
(B) 47
(C) 107
(D) 43
Answer : B

Question. Find the value of the expression √0.0009 + √0.01
(A) 3
(B) 0.3
(C) 1/3
(D) 0.9
Answer : B

Question. A general wishes to draw up his 36562 soldiers in the form of a solid square. After arranging them, he found that some of them are left over. How many are left?
(A) 36
(B) 65
(C) 81
(D) 97
Answer : C

Question. Find the value of √0.16/0.4
(A) 0.2
(B) 0.02
(C) 0.63
(D) 2√5/5
Answer : C

Question. The area of a square field is 80(244/729) sq. m. What is the length of each side of the field?
(A) 8.96 m
(B) 10.26 m
(C) 13.54 m
(D) 9.86 m
Answer : A

Question. If √2ⁿ = 64 , what is the value of 'n' ?
(A) 2
(B) 4
(C) 6
(D) 12
Answer : D

Question. If √2401 = √7^x ,find the value of ·x:
(A) 3
(B) 4
(C) 5
(D) 6
Answer : B

Question. Find the number, which when subtracted from its square results in 12.
(A) 6
(B) 5
(C) 4
(D) 8 
Answer : C

Question. Which of the following is the smallest number of 4 digits, which is not a perfect square?
(A) 1024
(B) 1089
(C) 1000
(D) 1156
Answer : C

Question. If √24 = 4.899, find the value of √8/3·
(A) 0.544
(B) 2.666
(C) 1.633
(D) 1.333
Answer : C

Question. Evaluate √4/3 - √3/4
(A) 1/2√3
(B) - 1/2√3
(C) 1
(D) 5√3/6
Answer : A

Question. Find the value of √0.064
(A) 0.8
(B) 0.08
(C) 0.008
(D) 0.253
Answer : D

Question. A gardener wants to plant 17956 trees and arranges them in such a way that there are as many rows as there are trees in a row. What is the number of trees in a row?
(A) 144
(B) 136
(C) 154
(D) 134
Answer : D

Question. Given x/√2.25 = 550 , find the value of 'x'.
(A) 825
(B) 82.5
(C) 3666.66
(D) 2
Answer : A

Question. Which is the smallest natural number which when added to the difference of squares of 17 and 13 gives a perfect square?
(A) 1
(B) 5
(C) 11
(D) 24
Answer : A

Please click the below link to access CBSE Class 8 Mathematics Worksheet - Square and Square Roots (2)