Math Olympiad Grade 4 Factors and Multiples Test-1


Factors & Multiples Worksheet-1

 

  1. Find the product of 37 × 27?

A. 999                                             B. Greatest 3 digit number

C. 999 or greatest 3 digit no.     D. Smallest 3-digit number

 

  1. A prime number has _____.

A. 0,2,4,6 or 8 at one’s place.    B. 1,3,5,7 or 9 at one’s place.    

C. 2 factors only.                          D. 2 multiplies only

 

  1. From this we can say that the number of prime numbers between 20 and 30 is:

A. 0                     B. 2                     C. 3                     D. 4

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  1. Out of 17, 19, 21 and 23 the composite number is:

A. 17                    B. 19                    C. 21                    D. 23

 

  1. The number which is divisible by 3 but not by 9 is:

A. 57                    B. 45                   C. 99                   D. 126

 

  1. ____Should be added to 695 to make it divisible by 10.

A. 1                      B. 2                     C. 0                     D. 5

 

  1. Consecutive prime numbers with a difference of 2 between them are called:

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

 

  1. An example for twin prime is:

A. 11, 15              B. 17, 23             C. 3, 7                 D. 11,13

 

  1. LCM of 5 and 7 is:

A. 5                      B. 7                      C. 12                    D. 35

 

  1. LCM of 4, 6 is:

A. 12                    B. 6                     C. 24                   D. 4

 

Answer Keys

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