CBSE Class 8 Mathematics Cubes And Cube Roots Worksheet Set B

CBSE Class 8 Cubes and Cube Roots Worksheet (2)

Worksheets have become an integral part of the education system. Worksheets are very critical for every student to practice his/ her concepts. Students, teachers and parents can download all CBSE educational material and extremely well prepared worksheets from this website. All revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects have been prepared based on the latest guidelines sent by CBSE. All CBSE educational material is developed by our panel of teachers, have also been submitted by thousands of teachers and students. The study material has been carefully compiled by the best teachers in India. Worksheets have been submitted by teachers of various CBSE schools and also have been carefully developed keeping into consideration the latest CBSE syllabus.

Question. Divide the number 26244 by the smallest number so that the question is a perfect cube, so the smallest number is :
(A) 4
(B) 6
(C) 36
(D) 16

Answer: C

Question. 55 x 55 – 2 x 25 x 55 + 25 x 25/302 = ?
(A) 6
(B) 4
(C) 5
(D) None of these

Answer: D

Question. The volumes of two cubes are in the ratio of 343 : 1331, the ratio of their edges is .
(A) 7: 10
(B) 7:11
(C) 7: 12
(D) None of these

Answer: B

Question. The least number which must be added to 4931 to make it perfect square is :
(A) 110
(B) 120
(C) 130
(D) None

Answer: A

Question. The least number which must be subtracted from 18265 to make it a perfect square is:
(A) 20
(B) 30
(C) 40
(D) 50

Answer: C

Question. √2√2√2√2√2 is equal to
(A) 0
(B) 2
(C) 1
(D) 2 31/32

Answer: D

Question. 65 x 65+ 2 x 65 x 35 + 35 x 35/65 + 35 = ?
(A) 1000
(B) 10
(C) 100
(D) None of these

Answer: C

Question. Value of 3√392 x 3√448 is
(A) 50
(B) 52
(C) 54
(D) 56

Answer: D

Question. The value of √225 is-
(A) 25
(B) 15
(C) 35
(D) 05

Answer: B

Question. The smallest number by which 137592 should be multiply to make it perfect cube.
(A) 1183
(B) 1180
(C) 1181
(D) None of these

Answer: A

Question. (48 - 8)2/40 = ?
(A) 40
(B) 80
(C) 15
(D) 150

Answer: A

Question. By studying the numbers given below, find out the missing numbers.
(1) 2+ (2)² + (2)² = (3)²
(i) (4)² + (5)² + __² = (21)²
(A) 20 (B) 6 (C) 7 (D) 24
(ii) (5)² + __² + (30)² = (31)²

Answer: A

Question. 'The greatest six digit number which is perfect square is :
(A) 998004
(B) 998006
(C) 998049
(D) 998001

Answer: D

Question. A gardner plants 17956 trees in such a way that there are as many rows as there are trees in each row. The number of trees in a row are :
(A) 136
(B) 164
(C) 134
(D) 166

Answer: C

Question. (65 - 56)²/3² = ?
(A) 8
(B) 9
(C) 1/9
(D) None of these

Answer: B

Question. (16)² x (4)² = ?
(A) 4096
(B) 16360
(C) 25360
(D) None of these

Answer: A

Question. (15/8 x 16)² = ?
(A) 916
(B) 900
(C) 926
(D) 1966

Answer: B

Question. (16)² + (12)²/(20)² = ?
(A) 4
(B) 2
(C) 1
(D) 5

Answer: C

Question. Least perfect square of 6 digits is :
(A) 998000
(B) 998001
(C) 998002
(D) None of these

Answer: B

Question. (65)² – (64)² + (1)² =?
(A) 130
(B) 129
(C) 138
(D) 120

Answer: A

Question. (57)² – (52)² = 5 × ?
(A) 109
(B) 108
(C) 5
(D) None of these

Answer: A

Question. (5, 12, 15) and (7, 5, 12)
(A) Both are Pythagorean triplets
(B) None of the both is Pythagorean triplet
(C) First is Pythagorean triplet while second is not
(D) Second is Pythagorean triplet while first is not

Answer: B

Question. The perfect cube nearest to 2750 is :
(A) 2749
(B) 2747
(C) 2744
(D) 2754

Answer: C

Question. If (65)² – (60)² = [(55)² – (50)² ] × y, then the value of y is-
(A) 23/21
(B) 28/21
(C) 25/21
(D) None of these

Answer: C

Question. A 8 × 6 × 4 cm³ metallic cube is melted. Find the minimum volume of molten metal which should be added to mould it into a cube whose edge is an x, where x is an integer.
(A) 20
(B) 21
(C) 23
(D) 24

Answer: D

Please click the below link to access CBSE Class 8 Cubes and Cube Roots Worksheet (2)