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Maths Quiz for Class 6 Playing with Numbers |
In this post, you will find 20 online maths quiz questions
for class 6 playing with numbers. Online maths quiz will take around 20 minutes
or less to complete it.
Question 1: All the factors of 63 are ___________.
A) 3, 7, 9, 21, 63
B) 1, 3, 7, 9, 21
C) 1, 3, 7, 9, 21, 63
D) 1, 3, 9, 21, 63
Explanation: All the factors of 63 are 1, 3, 7, 9, 21, 63.
Question 2: Which of the following is not a multiple of 11?
A) 109
B) 121
C) 99
D) 132
Explanation: 109 is not a multiple of 11.
Question 3: Which of the following is not a factor of 75?
A) 35
B) 25
C) 15
D) 5
Explanation: 35 is not a factor of 75.
Question 4: Which of the following a multiple of 17?
A) 104
B) 187
C) 138
D) 151
Explanation: 187 is a multiple of 17.
Question 5: Which of the following is a prime number?
A) 102
B) 97
C) 87
D) 69
Explanation: 97 is a prime number.
Question 6: Which of the following is a composite number?
A) 89
B) 107
C) 111
D) 83
Explanation: 111 is a composite number.
Question 7: Which of the following is a pair of co-prime numbers?
A) 19, 57
B) 64, 225
C) 35, 45
D) 21, 51
Explanation: 64 and 225 have no common factors other than 1. So, they are co-prime numbers.
Question 8: Which of the following is a pair of twin-prime numbers?
A) 81, 83
B) 31, 33
C) 61, 63
D) 71, 73
Explanation: (71, 73) is a pair of twin-prime numbers.
Question 9: Four prime numbers between 50 and 80 are ______________.
A) 61, 67, 71, 73
B) 51, 53, 61, 67
C) 61, 63, 71, 73
D) 59, 61, 63, 71
Explanation: 61, 67, 71, 73 are four prime numbers between 50 and 80.
Question 10: Which of the following is a composite number between 70 and 80?
A) 71
B) 73
C) 77
D) 79
Explanation: 77 is a composite number.
Question 11: Which of the following numbers is divisible by 4 and 8 both?
A) 673148
B) 321728
C) 945236
D) 753508
Explanation: 321728 is divisible by 4 and 8 both because the number formed by its last three digits, i.e., 728 is divisible by 8.
Question 12: Which of the following is divisible by 3?
A) 928654
B) 752016
C) 671045
D) 320984
Explanation: 752016 is divisible by 3 because 7 + 5 + 2 + 0 + 1 + 6 = 21, which is divisible by 3.
Question 13: Which of the following is divisible by 9?
A) 843597
B) 395867
C) 260157
D) 562701
Explanation: 843597 is divisible by 9 because 8 + 4 + 3 + 5 + 9 + 7 = 36, which is divisible by 9.
Question 14: Which of the following is divisible by 6?
A) 673825
B) 274856
C) 476381
D) 540264
Explanation: 540264 is divisible by 6 because it is divisible by 2 and 3 both.
Question 15: Which of the following is divisible by 11?
A) 813286
B) 579042
C) 250041
D) 602543
Explanation: 250041 is divisible by 11. 1 + 0 + 5 = 6 and 4 + 0 + 2 = 6. 6 – 6 = 0
Question 16: If 472x31 is divisible by 3, then the least value of x is __________.
A) 0
B) 1
C) 2
D) 3
Explanation: Since 472x31 is divisible by 3, therefore 4 + 7 + 2 + x + 3 + 1 = (17 + x) should be divisible by 3. If x = 1, then 17 + 1 = 18, which is divisible by 3. So, the least value of x is 1.
Question 17: If 4x3819 is divisible by 9, then the least value of x is __________.
A) 2
B) 3
C) 4
D) 5
Explanation: Since 4x3819 is divisible by 9, therefore 4 + x + 3 + 8 + 1 + 9 = (25 + x) should be divisible by 9. If x = 2, then 25 + 2 = 27, which is divisible by 9. So, the least value of x is 2.
Question 18: 15 + 72 ÷ (6 × 5 + 6) = _____.
A) 21
B) 27
C) 17
D) 25
Explanation: 15 + 72 ÷ (6 × 5 + 6) = 15 + 72 ÷ (30 + 6) = 15 + 72 ÷ 36 = 15 + 2 = 17
Question 19: 210 ÷ (12 × 3 + 6) = _______
A) 10
B) 5
C) 15
D) 8
Explanation: 210 ÷ (12 × 3 + 6) = 210 ÷ (36 + 6) = 210 ÷ 42 = 5
Question 20: 30 – 10 of 2 ÷ 5 + 2 × 3 = _______
A) 28
B) 30
C) 32
D) 36
Explanation: 30 – 10 of 2 ÷ 5 + 2 × 3 = 30 – 20 ÷ 5 + 2 × 3 = 30 – 4 + 2 × 3 = 30 – 4 + 6 = 30 + 6 – 4 = 36 – 4 = 32
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