ICSE Class 6 Mathematics - HCF and LCM - Test 5 (Comprehensive)
1. What is the HCF of 35 and 49?
A. 7
B. 5
C. 14
2. What is the LCM of 9 and 15?
A. 30
B. 45
C. 90
3. What is the HCF of 44 and 66?
A. 11
B. 33
C. 22
4. What is the LCM of 5 and 12?
A. 60
B. 30
C. 17
5. What is the HCF of 81 and 99?
A. 3
B. 9
C. 11
6. What is the LCM of 25 and 30?
A. 75
B. 100
C. 150
7. What is the HCF of 45, 54, and 63?
A. 9
B. 18
C. 27
8. What is the LCM of 6, 8, and 9?
A. 48
B. 72
C. 96
9. What is the HCF of 13 and 16?
A. 13
B. 16
C. 1
10. What is the LCM of 13 and 16?
A. 208
B. 104
C. 29
11. Using prime factorization, what is the HCF of 48 and 72?
A. 12
B. 24
C. 36
12. Using prime factorization, what is the LCM of 18 and 42?
A. 84
B. 108
C. 126
13. If the HCF of two numbers is 6 and their LCM is 84, what is their product?
A. 504
B. 490
C. 560
14. 50 pencils and 75 erasers are packed equally in packets. What is the maximum number of packets possible?
A. 15
B. 25
C. 50
15. Two ropes of length 48 m and 80 m are cut into equal longest pieces. What is the length of each piece?
A. 8 m
B. 12 m
C. 16 m
16. Two bells ring every 12 minutes and 20 minutes. After how many minutes will they ring together again?
A. 60 minutes
B. 40 minutes
C. 120 minutes
17. What is the least number that is exactly divisible by both 14 and 18?
A. 84
B. 126
C. 252
18. What is the greatest number that divides 96 and 144 exactly?
A. 24
B. 36
C. 48
19. What is the HCF of 27 and 81?
A. 27
B. 54
C. 81
20. What is the LCM of 14 and 56?
A. 14
B. 56
C. 70