Factors & Multiples Worksheet-3

Factors & Multiples Worksheet-3

1. _____Should be subtracted from 642 to make it divisible by 8.

A. 0                     B. 1                      C. 2                     D. 642

2. Prime numbers have exactly_____ factors.

A. 0                     B. 1                      C. 2                     D. Many

Try more maths fraction worksheets

3. The number which is divisible by 2 but not by 4 is:

A. 16                    B. 26                   C. 24                   D. 32

4. A number is divisible by 3, if the sum of its digit is divisible by:

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

5. 21 and 31 are_____ numbers.

A. Prime            B. Composite    C. Co-prime      D. Twin prime

6. 11 and_____ are co-prime numbers.

A. 11                    B. 88                   C. 143                 D. 13

7. The sum of prime number between 20 and 30 is:

A. 50                   B. 23                   C. 52                             D. 51

8. Every prime number except _____ is odd:

A. 1                      B. 3                     C. 2                     D. 5

9. The even number after 17599 is:

A. 17590             B. 17560             C. 17600            D. 18600

10. The sum of the least prime number and the least composite number is:

A. 1                      B. 2                     C. 6                     D. 4

Answer Keys

(1)–C; (2)–C; (3)–B; (4)–D; (5)–C; (6)–D; (7)–C; (8)–C; (9)–C; (10)–C