Multiple & Factors Worksheet-9

Multiple & Factors Worksheet-9

1. L.C.M. of 36 and 72 is:

      A. 36                   B. 72                   C. 108                 D. 2

2. L.C.M. of 17 and 5 is:

      A. 105                 B. 95                   C. 85                   D. 5

3. H.C.F. of 36 and 144 is:

      A. 36                   B. 144                 C. 4                     D. 2

4. HCF of two numbers = _____

      A. Product of numbers ÷ their LCM

      B. Product of numbers × their HCF

      C. Product of numbers

      D. none of these

5. HCF of 120, 144 and 216 is:

      A. 38                   B. 24                   C. 120                 D. 144

6. Three common multiples of 18 and 6 are?

      A. 18, 6, 9          B. 18, 36, 6        C. 36, 54, 72     D. none of these

7. Every number is a ____ and a ____ of itself.

      A. factor, multiple                        B. prime, composite

      C. even, odd                                  D. none of these

8. A number which is a factor of every number is:

      A. 0                     B. 1                      C. 2                D. none of these

9. Difference between a prime (19) and a composite (25) number is:

      A. 6                     B. 8                     C. 9                D. 3

10. Number of prime numbers between 50 to 60 is:

      A. 1                      B. 2                     C. 3               D. 4

Answer Key:

(1)-B; (2)-C; (3)-A; (4)-A; (5)-B; (6)-C; (7)-A; (8)-B; (9)-A; (10)-B