Maths Quiz for Class 5 Factors and Multiples |
In this post, you will find 20 online maths quiz questions for class 5 factors and multiples. Maths quiz will take around 15 minutes or less to complete it.
Question 1: Which of the following numbers is divisible by 3?
A) 74839
B) 29036
C) 20163
D) 24865
Explanation: 20163 is divisible by 3 because 2 + 0 + 1 + 6 + 3 = 12, which is divisible by 3.
Question 2: Which of the following numbers is divisible by 4?
A) 74908
B) 47514
C) 56926
D) 81638
Explanation: 74908 is divisible by 4 because the number formed by its last two digits, that is, 08 is divisible by 4.
Question 3: Which of the following numbers is not divisible by 5?
A) 48614
B) 47830
C) 50985
D) 21835
Explanation: 48614 is not divisible by 5 because its last digit is neither 0 nor 5.
Question 4: Which of the following numbers is divisible by 6?
A) 29438
B) 73518
C) 50824
D) 26390
Explanation: 73518 is divisible by 6 because it is divisible by 2 and 3 both.
Question 5: Which of the following numbers is divisible by 8?
A) 405628
B) 715832
C) 859306
D) 358428
Explanation: 715832 is divisible by 8 because the number formed by its last three digits, that is, 832 is divisible by 8.
Question 6: Which of the following numbers is divisible by 9?
A) 285749
B) 473928
C) 936054
D) 531974
Explanation: 936054 is divisible by 9 because the sum of its digits, 9 + 3 + 6 + 0 + 5 + 4 = 27, which is divisible by 9.
Question 7: If a number 648a23 is divisible by 3, then what is the smallest value of the digit a?
A) 0
B) 1
C) 2
D) 3
Explanation: If a = 1, then the number 648123 is divisible by 3, because the sum of its digits is divisible by 3.
Question 8: Which of the following numbers is not divisible by 10?
A) 487500
B) 476510
C) 329850
D) 287545
Explanation: 287545 is not divisible by 10 because its last digit is not 0.
Question 9: Which of the following numbers is prime?
A) 73
B) 49
C) 87
D) 69
Explanation: 73 is a prime number.
Question 10: Which of the following numbers is composite?
A) 89
B) 71
C) 57
D) 61
Explanation: 57 is a composite number.
Question 11: The correct prime factorisation of 180 is _____________.
A) 4 × 3 × 3 × 5
B) 2 × 2 × 3 × 3 × 5
C) 2 × 2 × 9 × 5
D) 2 × 3 × 6 × 5
Explanation: The prime factorisation of 180 is 2 × 2 × 3 × 3 × 5.
Question 12: Which of the following is a pair of co-prime numbers?
A) 3, 15
B) 16, 25
C) 35, 65
D) 14, 42
Explanation: (16, 25) is a pair of co-prime numbers because 16 and 25 do not have a common factor other than 1.
Question 13: The HCF of 12, 24 and 36 is ________.
A) 12
B) 6
C) 4
D) 2
Explanation: 12 = 2 × 2 × 3; 24 = 2 × 2 × 2 × 3 and 36 = 2 × 2 × 3 × 3. HCF = 2 × 2 × 3 = 12. Hence, HCF is 12.
Question 14: The HCF of 42, 63 and 105 is _______.
A) 7
B) 14
C) 42
D) 21
Explanation: 42 = 2 × 3 × 7; 63 = 3 × 3 × 7 and 105 = 3 × 5 × 7. HCF = 3 × 7 = 21. Hence, HCF is 21.
Question 15: The LCM of 15 and 90 is _______.
A) 15
B) 45
C) 90
D) 30
Explanation: 15 = 3 × 5 and 90 = 2 × 3 × 3 × 5. Hence, LCM = 3 × 5 × 2 × 3 = 90.
Question 16: The LCM of 45, 75 and 125 is ______.
A) 925
B) 1125
C) 300
D) 600
Explanation: 45 = 3 × 3 × 5; 75 = 3 × 5 × 5 and 125 = 5 × 5 × 5. Now, LCM = 3 × 3 × 5 × 5 × 5 = 1125. Hence, LCM is 1125.
Question 17: The HCF of 27 and 36 is ________.
A) 9
B) 6
C) 12
D) 3
Explanation: 27 = 3 × 3 × 3 and 36 = 2 × 2 × 3 × 3. Hence, HCF = 3 × 3 = 9.
Question 18: The LCM of 30 and 40 is ___________.
A) 90
B) 80
C) 120
D) 150
Explanation: 30 = 2 × 3 × 5 and 40 = 2 × 2 × 2 × 5. Hence, LCM = 2 × 2 × 2 × 3 × 5 = 120.
Question 19: The length and the breadth of a hall is 12 m and 8 m respectively. What is the length of the longest rod that can measure the length and the breadth of the room exactly?
A) 8 m
B) 4 m
C) 12 m
D) 24 m
Explanation: To find the length of the longest rod, we need to find the HCF of 12 m and 8 m. 12 = 2 × 2 × 3 and 8 = 2 × 2 × 2. Hence, HCF = 2 × 2 = 4. Hence, the length of the longest rod is 4 m.
Question 20: Three bells ring at an interval of 15 minutes, 30 minutes and 45 minutes. If they ring at 6:00 a.m. together, at what time will they ring together again?
A) 8:00 a.m.
B) 7:00 a.m.
C) 7:30 a.m.
D) 7:30 p.m.
Explanation: The LCM of 15, 30 and 45 is 90. The bells will ring after 90 minutes of 6:00 a.m. or after 1 hour 30 minutes, that is, at 7:30 a.m.
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