Squares and Square Roots/ MCQ/Class 8 Mathematics
Squares and Square Roots – Chapter 6/MCQ
CBSE Class 8 Mathematics/ Multiple Choice Questions- Extra Questions for Practice
Choose the correct answer from the options given below:
- The square root of 20.25 is ———
A. 45
B. 4.5
C. 0.45
Answer: 4.5 - The area of a square is 484 square cm. Find the length of the side of the square?
A. 20
B. 21
C. 22
Answer: 22 cm - In a right angled triangle PQR, right angled at Q, PQ = 3 cm, QR = 4 cm then PR = ——-
A. 5
B. 7
C. 25
Answer: 5 cm - The square of 1.8 is ———–
A. 3.24
B. 32.4
C. 324
Answer: 3.24 - The hypotenuse and one leg of a right angled triangle are 10 cm and 8 cm respectively. Find the length of third side?
A. 2 cm
B. 6 cm
C. 9 cm
Answer: 6 cm - Which of the following is a perfect square?
A. 23
B. 24
C. 25
Answer: 25 - Which of the following is not a perfect square?
A. 289
B. 321
C. 361
Answer: 321 - The square of 35 is ————–
A. 1025
B. 1125
C. 1225
Answer: 1225 - What will be the one digit in the square of 6435?
A. 5
B. 6
C. 9
Answer: 5 - What will be the number of zeroes in the square of 200?
A. 2
B. 3
C. 4
Answer: 4 - The perfect square number between 80 and 90 is ————-
A. 81
B. 83
C. 85
Answer: 81 - If a number has 1 or 9 in the units place, then its square ends in ———–
A. 1
B. 2
C. 3
Answer: 1 - The square of which of the following numbers would be an odd number?
A. 727
B. 158
C. 1980
Answer: 727 - How many natural numbers lie between the squares of 10 and 11?
A. 20
B. 21
C. 22
Answer: 20 - Which of the following is not a Pythagorean triplet?
A. 3, 4, 5
B. 6, 8, 10
C. 5, 6, 8
Answer: 5,6, 8 - The square of (-7) is ———-
A. 14
B. 49
C. -49
Answer: 49 - How many 3s are there in the prime factorisation of 324?
A. 3
B. 4
C.2
Answer: 4 - The square root of 6400 is ————-
A. 8
B. 80
C. 800
Answer: 80 - Which is the smallest 4 digit perfect square?
A. 1024
B. 1025
C. 1026
Answer: 1024 - Which is the greatest 4 digit perfect square?
A. 9800
B. 9801
C. 9802
Answer: 9801