Squares and Square Roots MCQs with answers

Dear candidates you will find MCQ questions of 8th Class - Math | Chapter: Squares and Square Roots here. Learn these questions and prepare yourself for coming examinations. You can check the right answer of any question by clicking the option or by clicking view answer button.
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Q. The Pythagorean triples whose smallest number is 8:
  • (A) 8, 16 17
  • (B) 8, 17, 18
  • (C) 8, 15, 17
  • (D) 8, 15, 16
💬 Discuss
✅ Correct Answer: (C) 8, 15, 17
Q. Which of the following is a perfect square?
  • (A) 1057
  • (B) 625
  • (C) 7928
  • (D) 64000
💬 Discuss
✅ Correct Answer: (B) 625
Q. Which of the following will have 6 at unit place?
  • (A) 19²
  • (B) 11²
  • (C) 24²
  • (D) 13²
💬 Discuss
✅ Correct Answer: (C) 24²
Q. If 5278 is squared, then what will be at unit place?
  • (A) 8
  • (B) 7
  • (C) 6
  • (D) 4
💬 Discuss
✅ Correct Answer: (D) 4
Q. What will be the number of zeros in square of 400?
  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 6
💬 Discuss
✅ Correct Answer: (C) 4
Q. How many natural numbers lie between 9² and 10²?
  • (A) 17
  • (B) 18
  • (C) 19
  • (D) 20
💬 Discuss
✅ Correct Answer: (B) 18
Q. What is the sum of first four odd natural numbers?
  • (A) 16
  • (B) 17
  • (C) 18
  • (D) 20
💬 Discuss
✅ Correct Answer: (A) 16
Q. The value of 9² – 1 is equal to:
  • (A) 81
  • (B) 80
  • (C) 79
  • (D) None of the above
💬 Discuss
✅ Correct Answer: (B) 80
Q. The sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 +19 is
  • (A) 121
  • (B) 120
  • (C) 100
  • (D) 110
💬 Discuss
✅ Correct Answer: (C) 100
Q. The square of 42 is
  • (A) 1764
  • (B) 1664
  • (C) 1564
  • (D) 1504
💬 Discuss
✅ Correct Answer: (A) 1764
Q. Which of the following is not a square number?
  • (A) 4
  • (B) 9
  • (C) 16
  • (D) 24
💬 Discuss
✅ Correct Answer: (D) 24
Q. The square of 23 is
  • (A) 529
  • (B) 526
  • (C) 46
  • (D) 429
💬 Discuss
✅ Correct Answer: (A) 529
Q. The square of which of the following would be even number?
  • (A) 2826
  • (B) 7779
  • (C) 1057
  • (D) 131
💬 Discuss
✅ Correct Answer: (A) 2826
Q. The square of which of the following would be odd number?
  • (A) 431
  • (B) 272
  • (C) 1234
  • (D) 7928
💬 Discuss
✅ Correct Answer: (A) 431
Q. Which of the following is a perfect square ?
  • (A) 45
  • (B) 81
  • (C) 18
  • (D) 54
💬 Discuss
✅ Correct Answer: (B) 81
Q. What will be the “ one’s digit” in the square of 1234?
  • (A) 6
  • (B) 2
  • (C) 8
  • (D) 9
💬 Discuss
✅ Correct Answer: (A) 6
Q. What will be the number of zeros in the square of 400?
  • (A) 5
  • (B) 1
  • (C) 3
  • (D) 4
💬 Discuss
✅ Correct Answer: (D) 4
Q. The perfect square number between 30 and 40 is
  • (A) 35
  • (B) 39
  • (C) 36
  • (D) 32
💬 Discuss
✅ Correct Answer: (C) 36
Q. Which of the following number would have digit 6 at units place?
  • (A) 192
  • (B) 242
  • (C) 252
  • (D) 132
💬 Discuss
✅ Correct Answer: (B) 242
Q. Which of the following number would have digit 5 at units place
  • (A) 952
  • (B) 592
  • (C) 242
  • (D) 422
💬 Discuss
✅ Correct Answer: (A) 952
Q. Which of the following number would have digit 1 at units place?
  • (A) 812
  • (B) 182
  • (C) 542
  • (D) 952
💬 Discuss
✅ Correct Answer: (A) 812
Q. How many non square numbers lie between 11² and 12²?
  • (A) 21
  • (B) 23
  • (C) 22
  • (D) 20
💬 Discuss
✅ Correct Answer: (C) 22
Q. 25 can be express as the sum of first _________consecutive odd numbers.
  • (A) 4
  • (B) 6
  • (C) 3
  • (D) 5
💬 Discuss
✅ Correct Answer: (D) 5
Q. How many numbers lie between square of 12 and 13?
  • (A) 21
  • (B) 23
  • (C) 22
  • (D) 24
💬 Discuss
✅ Correct Answer: (D) 24
Q. What will be the value of „ x‟ in Pythagorean triplet (6,8, x)?
  • (A) 5
  • (B) 7
  • (C) 10
  • (D) 11
💬 Discuss
✅ Correct Answer: (C) 10
Q. The square of -9 is
  • (A) -81
  • (B) 81
  • (C) 18
  • (D) -18
💬 Discuss
✅ Correct Answer: (B) 81
Q. The square root of 6400 is
  • (A) 80
  • (B) 81
  • (C) 32
  • (D) 23
💬 Discuss
✅ Correct Answer: (A) 80
Q. By which smallest number 90 must be multiplied so as to make it a perfect square?
  • (A) 10
  • (B) 2
  • (C) 5
  • (D) 3
💬 Discuss
✅ Correct Answer: (A) 10
Q. By which smallest number 48 must be divided so as to make it a perfect square ?
  • (A) 2
  • (B) 3
  • (C) 6
  • (D) 4
💬 Discuss
✅ Correct Answer: (B) 3
Q. which smallest number should be added to 80 so as to make it a perfect square?
  • (A) 2
  • (B) 3
  • (C) 1
  • (D) 4
💬 Discuss
✅ Correct Answer: (C) 1
Q. What could be the possible “one’s digit” of the square root of 625?
  • (A) 5
  • (B) 0
  • (C) 4
  • (D) 8
💬 Discuss
✅ Correct Answer: (A) 5
Q. Which is the smallest three-digit perfect square?
  • (A) 100
  • (B) 101
  • (C) 121
  • (D) 144
💬 Discuss
✅ Correct Answer: (A) 100
Q. Which is the greatest three-digit perfect square?
  • (A) 999
  • (B) 961
  • (C) 962
  • (D) 970
💬 Discuss
✅ Correct Answer: (B) 961
Q. Which is the greatest 4-digit perfect square?
  • (A) 9999
  • (B) 9990
  • (C) 9800
  • (D) 9801
💬 Discuss
✅ Correct Answer: (A) 9999
Q. Which is the smallest 4-digit perfect square?
  • (A) 1024
  • (B) 1025
  • (C) 1000
  • (D) 1016
💬 Discuss
✅ Correct Answer: (D) 1016
Q. What will be the number of digits in the square root of 25600?
  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5
💬 Discuss
✅ Correct Answer: (B) 3
Q. What will be the number of digits in the square root of 1296?
  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4
💬 Discuss
✅ Correct Answer: (B) 2
Q. The square root of 12.25 is _______________ .
  • (A) 3.5
  • (B) 2.5
  • (C) 35
  • (D) 25
💬 Discuss
✅ Correct Answer: (A) 3.5
Q. What is the length of the side of a square whose area is 441 cm²?
  • (A) 21
  • (B) 22
  • (C) 20
  • (D) 12
💬 Discuss
✅ Correct Answer: (A) 21
Q. In a right angle triangle ABC , right angled at B, AB=6cm, BC=8cm ,then AC= ____ .
  • (A) 10
  • (B) 12
  • (C) 21
  • (D) 14
💬 Discuss
✅ Correct Answer: (A) 10
Q. Which least number should be subtracted from 629 so as to get a perfect square?
  • (A) 4
  • (B) 5
  • (C) 6
  • (D) 3
💬 Discuss
✅ Correct Answer: (A) 4
Q. The square root of 1.21 is
  • (A) 1.1
  • (B) 11
  • (C) 21
  • (D) 2.1
💬 Discuss
✅ Correct Answer: (A) 1.1
Q. What is the smallest square number which is divisible by each of the numbers 6,9 and 15 ?
  • (A) 900
  • (B) 810
  • (C) 630
  • (D) 720
💬 Discuss
✅ Correct Answer: (A) 900
Q. The square of 1.2 is
  • (A) 144
  • (B) 1.44
  • (C) 14.4
  • (D) 2.4
💬 Discuss
✅ Correct Answer: (B) 1.44
Q. The square root of 169 is
  • (A) -13
  • (B) 1.3
  • (C) -1.3
  • (D) 13/10
💬 Discuss
✅ Correct Answer: (A) -13
Q. What is the length of the diagonal of a rectangle having dimensions 3cm and 4cm?
  • (A) 5
  • (B) 7
  • (C) 1
  • (D) 4
💬 Discuss
✅ Correct Answer: (A) 5
Q. What will be the length of third side of a right angled triangle whose hypotenuse is 5cm and one of the side is 3 cm?
  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5
💬 Discuss
✅ Correct Answer: (C) 4
Q. Which of the following is not a perfect square?
  • (A) 81
  • (B) 18
  • (C) 100
  • (D) 121
💬 Discuss
✅ Correct Answer: (B) 18
Q. Which is the smallest square number that is divisible by each of the number 4, 9 and 10?
  • (A) 900
  • (B) 810
  • (C) 800
  • (D) 920
💬 Discuss
✅ Correct Answer: (A) 900

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Table of contents

  1. The Pythagorean triples whose smallest number is 8:
  2. Which of the following is a perfect square?
  3. Which of the following will have 6 at unit place?
  4. If 5278 is squared, then what will be at unit place?
  5. What will be the number of zeros in square of 400?
  6. How many natural numbers lie between 9² and 10²?
  7. What is the sum of first four odd natural numbers?
  8. The value of 9² – 1 is equal to:
  9. The sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 +19 is
  10. The square of 42 is
  11. Which of the following is not a square number?
  12. The square of 23 is
  13. The square of which of the following would be even number?
  14. The square of which of the following would be odd number?
  15. Which of the following is a perfect square ?
  16. What will be the “ one’s digit” in the square of 1234?
  17. What will be the number of zeros in the square of 400?
  18. The perfect square number between 30 and 40 is
  19. Which of the following number would have digit 6 at units place?
  20. Which of the following number would have digit 5 at units place
  21. Which of the following number would have digit 1 at units place?
  22. How many non square numbers lie between 11² and 12²?
  23. 25 can be express as the sum of first _________consecutive odd numbers.
  24. How many numbers lie between square of 12 and 13?
  25. What will be the value of „ x‟ in Pythagorean triplet (6,8, x)?
  26. The square of -9 is
  27. The square root of 6400 is
  28. By which smallest number 90 must be multiplied so as to make it a perfect square?
  29. By which smallest number 48 must be divided so as to make it a perfect square ?
  30. which smallest number should be added to 80 so as to make it a perfect square?
  31. What could be the possible “one’s digit” of the square root of 625?
  32. Which is the smallest three-digit perfect square?
  33. Which is the greatest three-digit perfect square?
  34. Which is the greatest 4-digit perfect square?
  35. Which is the smallest 4-digit perfect square?
  36. What will be the number of digits in the square root of 25600?
  37. What will be the number of digits in the square root of 1296?
  38. The square root of 12.25 is _______________ .
  39. What is the length of the side of a square whose area is 441 cm²?
  40. In a right angle triangle ABC , right angled at B, AB=6cm, BC=8cm ,then AC= ____ .
  41. Which least number should be subtracted from 629 so as to get a perfect square?
  42. The square root of 1.21 is
  43. What is the smallest square number which is divisible by each of the numbers 6,9 and 15 ?
  44. The square of 1.2 is
  45. The square root of 169 is
  46. What is the length of the diagonal of a rectangle having dimensions 3cm and 4cm?
  47. What will be the length of third side of a right angled triangle whose hypotenuse is 5cm and one of
  48. Which of the following is not a perfect square?
  49. Which is the smallest square number that is divisible by each of the number 4, 9 and 10?

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