Maths Quiz for Class 5 Factors and Multiples

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.