Worksheet on Multiples and Factors

Worksheet on multiples and factors contains various types of questions. We know, 1 is a factor of every number. And, a multiple of a number is always greater than or equal to the number.

I. Answer the following question:

(i) Write first twelve multiples of 5.

(ii) Is 1 a prime number or composite number?

(iii) Is there an even prime number?


II. Which of the following numbers are prime:

(i) 2                                        (ii) 6

(iii) 11                                    (iv) 15

(v) 39                                    (vi) 93

(vii) 57                                   (viii) 75

(ix) 81                                    (x) 87


III. Fill in the blanks:

(i) 1 is a ________ number.

(ii) The smallest composite number is ________.

(iii) 3, 7, 9, 15, 25 are ________ numbers.

(iv) ________ is a factor of every number.

(v) ________ is a factor of every even number.

(vi) A ________ number has only 2 factors one and the number itself.

(vii) A composite number has more than ________ factors.


IV. Find prime factors of the following:

(i) 786                                    (ii) 256

(iii) 324                                  (iv) 546

(v) 484                                  (vi) 117


Answers for the worksheet on multiples and factors are given below.


Answers:


I. (i) 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60

(ii) 1 is neither a prime number nor a composite number.

(iii) Yes, 2 is an even prime number.


II. (i) 2 and (iii) 11                                             

III. (i) unique

(ii) 4

(iii) odd

(iv) 1

(v) 2

(vi) prime

(vii) two


IV. (i) 786 2, 3 and 131

(ii) 2, 2, 2, 2, 2, 2, 2 and 2

(iii) 2, 2, 3, 3, 3 and 3

(iv) 2, 3, 7 and 13

(v) 2, 2, 11 and 11

(vi) 3, 3 and 13

Multiples and Factors.




5th Grade Math Problems

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