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
5th Grade Math Problems
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