GRADE 8 Mathematics – Squares and Square Roots Quiz

1. What is the square of 9?

64
81
48
72
Explanation:

The square of 9 is calculated by multiplying 9 by itself, which equals 81.

2. Which of the following is the square root of 64?

8
9
7
6
Explanation:

The square root of a number is a value that, when multiplied by itself, gives the original number. In this case, √64 = 8.

3. What is the square of 12?

169
132
156
144
Explanation:

12 squared is equal to 12 multiplied by 12, which equals 144.

4. Which of the following is the square root of 25?

6
4
3
5
Explanation:

The square root of 25 is the number that, when multiplied by itself, equals 25. Therefore, √25 = 5.

5. What is the square of 15?

225
240
230
220
Explanation:

To find the square of 15, multiply 15 by 15 which gives 225.

6. Which number is a perfect square?

47
36
23
55
Explanation:

A perfect square is a number that can be expressed as the product of an integer with itself. 36 can be written as 6 x 6, making it a perfect square.

7. What is the square root of 100?

11
9
10
8
Explanation:

The square root of 100 is the value that, when multiplied by itself, gives 100. Hence, the square root of 100 is 10.

8. Which of the following is a perfect square?

42
22
64
32
Explanation:

64 is a perfect square because it is the result of multiplying 8 by 8, making it a perfect square number.

9. What is the square root of 144?

12
14
10
16
Explanation:

The square root of 144 is the value that, when multiplied by itself, gives 144. Hence, √144 = 12.

10. What is the square of 17?

289
321
273
306
Explanation:

The square of 17 is calculated by multiplying 17 by itself, which equals 289.

11. Which of the following is the square root of 81?

10
8
9
6
Explanation:

The square root of a number is the value that, when multiplied by itself, gives the original number. Therefore, √81 = 9.

12. What is the square of 20?

420
380
400
440
Explanation:

To find the square of 20, multiply 20 by 20 which gives 400.

13. Which number is a perfect square?

38
51
25
66
Explanation:

A perfect square is a number that can be expressed as the product of an integer with itself. 25 can be written as 5 x 5, making it a perfect square.

14. What is the square root of 121?

11
8
14
17
Explanation:

The square root of 121 is the value that, when multiplied by itself, gives 121. Thus, √121 = 11.

15. What is the square of 24?

576
552
572
532
Explanation:

To calculate the square of 24, you multiply 24 by 24, which results in 576.

16. Which of the following is the square root of 169?

12
11
10
13
Explanation:

The square root of 169 is the number that, when multiplied by itself, equals 169. Hence, √169 = 13.

17. What is the square of 28?

824
804
764
784
Explanation:

The square of 28 is obtained by multiplying 28 by itself, resulting in 784.

18. Which number is a perfect square?

42
37
53
49
Explanation:

49 is a perfect square since it can be expressed as 7 x 7, making it a perfect square number.

19. What is the square root of 196?

14
18
12
16
Explanation:

The square root of 196 is the value that, when multiplied by itself, gives 196. Therefore, √196 = 14.

20. What is the square of 32?

1054
1004
1024
954
Explanation:

The square of 32 is calculated by multiplying 32 by itself, resulting in 1024.

21. Which of the following is the square root of 225?

18
20
15
12
Explanation:

The square root of 225 is the number that, when multiplied by itself, equals 225. Therefore, √225 = 15.

22. What is the square of 36?

1440
1368
1296
1244
Explanation:

To find the square of 36, multiply 36 by 36 which equals 1296.

23. Which number is a perfect square?

63
57
64
41
Explanation:

64 is a perfect square because it can be written as 8 x 8, making it a perfect square number.

24. What is the square root of 256?

14
18
20
16
Explanation:

The square root of 256 is the value that, when multiplied by itself, gives 256. Hence, √256 = 16.

25. What is the square of 40?

1600
1760
1520
1680
Explanation:

To calculate the square of 40, multiply 40 by 40 which equals 1600.

26. Which of the following is a perfect square?

45
81
65
52
Explanation:

81 is a perfect square since it can be expressed as 9 x 9, making it a perfect square number.

27. What is the square of 8?

64
72
59
86
Explanation:

The square of 8 is calculated as 8 x 8 = 64

28. Which is the square root of 121?

10
11
12
13
Explanation:

The square root of 121 is a number that, when multiplied by itself, equals 121. In this case, the square root of 121 is 11.

29. What is the result of 6 squared?

24
36
30
42
Explanation:

6 squared means 6 x 6, which equals 36.

30. If a number squared gives 169, what is that number?

14
13
11
12
Explanation:

The square root of 169 is 13, as 13 x 13 = 169.

31. Which number is a perfect square?

75
100
125
95
Explanation:

100 is a perfect square because it can be expressed as 10 x 10.

32. What is the square root of 144?

14
10
12
16
Explanation:

The square root of 144 is 12, as 12 x 12 equals 144.

33. Which number squared is 25?

4
7
6
5
Explanation:

The square root of 25 is 5, as 5 x 5 equals 25.

34. What is the square of 9?

70
90
81
72
Explanation:

The square of 9 is calculated as 9 x 9 = 81.

35. If a number squared gives 64, what is that number?

8
6
7
9
Explanation:

The square root of 64 is 8, as 8 x 8 = 64.

36. What is the result of 10 squared?

90
120
100
110
Explanation:

10 squared means 10 x 10, which equals 100.

37. Which number is a perfect square?

68
93
102
81
Explanation:

81 is a perfect square because it can be expressed as 9 x 9.

38. What is the square root of 196?

16
12
18
14
Explanation:

The square root of 196 is 14, as 14 x 14 equals 196.

39. Which number squared is 36?

4
7
5
6
Explanation:

The square root of 36 is 6, as 6 x 6 equals 36.

40. What is the square of 7?

44
49
55
63
Explanation:

The square of 7 is calculated as 7 x 7 = 49.

41. If a number squared gives 225, what is that number?

12
18
15
21
Explanation:

The square root of 225 is 15, as 15 x 15 = 225.

42. Which number is a perfect square?

110
100
80
90
Explanation:

100 is a perfect square because it can be expressed as 10 x 10.

43. What is the square root of 169?

11
17
13
15
Explanation:

The square root of 169 is 13, as 13 x 13 equals 169.

44. Which number squared is 64?

9
7
8
6
Explanation:

The square root of 64 is 8, as 8 x 8 = 64.

45. What is the result of 11 squared?

110
131
121
111
Explanation:

11 squared means 11 x 11, which equals 121.

46. Which number is a perfect square?

81
89
73
97
Explanation:

81 is a perfect square because it can be expressed as 9 x 9.

47. What is the square root of 225?

15
21
12
18
Explanation:

The square root of 225 is 15, as 15 x 15 = 225.