ICSE Class 6 Mathematics - Playing with Numbers - Test 5 (Comprehensive)
1. Which of the following is a factor of 45?
A. 7
B. 8
C. 9
2. Which of the following is a multiple of 11?
A. 55
B. 56
C. 57
3. Which list shows all factors of 27?
A. 1, 3, 6, 9, 27
B. 1, 3, 9, 27
C. 3, 6, 9, 12, 27
4. Which list shows the first five multiples of 9?
A. 9, 19, 29, 39, 49
B. 1, 9, 18, 27, 36
C. 9, 18, 27, 36, 45
5. Which number is divisible by 3?
A. 5,124
B. 5,125
C. 5,127
6. Which number is divisible by 4?
A. 8,322
B. 8,324
C. 8,326
7. Which number is divisible by 9?
A. 4,852
B. 4,856
C. 4,851
8. Which number is divisible by 10?
A. 3,940
B. 3,945
C. 3,948
9. Which number is divisible by 6?
A. 713
B. 714
C. 715
10. Which of the following is a prime number?
A. 39
B. 49
C. 37
11. Which of the following is a composite number?
A. 51
B. 41
C. 43
12. Which pair is a pair of twin primes?
A. 39 and 41
B. 41 and 43
C. 45 and 47
13. Which pair is co-prime?
A. 18 and 27
B. 22 and 33
C. 16 and 27
14. What is the prime factorization of 72?
A. 2 x 2 x 2 x 3 x 3
B. 6 x 12
C. 8 x 9
15. What is the HCF of 30 and 48?
A. 3
B. 6
C. 12
16. What is the LCM of 12 and 16?
A. 32
B. 36
C. 48
17. Which is a common factor of 33 and 44?
A. 11
B. 13
C. 15
18. Which is a common multiple of 7 and 12?
A. 72
B. 84
C. 96
19. Two bells ring every 10 minutes and 18 minutes. After how many minutes will they ring together again?
A. 60 minutes
B. 80 minutes
C. 90 minutes
20. 54 pens and 72 pencils are packed equally in packets. What is the maximum number of packets possible?
A. 18
B. 24
C. 36