Download Worksheet - MoreMaths

Mathematics
Class 5
Factors and Multiples
Q1)
Find the LCM of 15 and 135.
a)
b)
c)
d)
Q2)
Q3)
Q5)
(1 Mark)
Prime
Composite
Even
Odd
A number is divisible by 9, if the sum of its digits is divisible by ----.
a)
b)
c)
d)
(1 Mark)
14
780
740
784
Numbers which have more than two factors are called -------- numbers.
a)
b)
c)
d)
(1 Mark)
80
30
60
120
Find the L.C.M of 112 and 98.
a)
b)
c)
d)
Q4)
15
5
13
135
Find the H.C.F of 240, 360 and 600.
a)
b)
c)
d)
(1 Mark)
9
6
3
99
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(1 Mark)
Mathematics
Class 5
Q6)
6,488 is divisible by :
a)
b)
c)
d)
Q7)
True
False
Can't say
None of these
The number 24 is to be written as a product of its prime factors. Which one of the
following is correct?
a)
b)
c)
d)
Q9)
3
7
8
11
If a number is expressed as the product of its prime factors, such a factorization is called (1 Mark)
a Prime factorization.
a)
b)
c)
d)
Q8)
(1 Mark)
24 = 3 x 8
24 = 4 x 6
24 = 2 x 3 x 4
24 = 2 x 2 x 2 x 3
Find the H.C.F of 104, 147 and 209.
a)
b)
c)
d)
(1 Mark)
(1 Mark)
1
4
9
2
Q10)
Find the HCF of 54 and 72 by the division method.
(2 Marks)
Q11)
Find the L.C.M of the following by the method of division:
(2 Marks)
a. 36, 72, 144
b. 74, 111, 148
Q12)
Write all the prime factors of 36.
(2 Marks)
Q13)
Factorise:
(2 Marks)
a. 1455
b. 6525
ǀ Copyright © 2015 Macmillan Publishers India Ltd. All rights reserved
Mathematics
Class 5
Q14)
Factorize: 150
(2 Marks)
Q15)
Find the LCM of 9 and 12 by prime factorization method.
(2 Marks)
Q16)
Find the H.C.F. of 535, 1150, 975 by the method of successive division.
(2 Marks)
Q17)
Write the prime factors of:
(4 Marks)
a. 48
b. 18
Q18)
HCF stands for :
(2 Marks)
Q19)
List out the common factors of the following numbers and then find out the HCF:
(2 Marks)
18 and 24
Q20)
Write down all the multiples of 2 between 9 and 21.
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(2 Marks)
Mathematics
Class 5
Answers
Q1)
135
Q2)
120
Q3)
784
Q4)
Composite
Q5)
9
Q6)
8
Q7)
True
Q8)
24 = 2 x 2 x 2 x 3
Q9)
1
Q10)
18
Q11)
a. 144
b. 444
Q12)
36 = 2 x 2 x 3 x 3
Q13)
a. 1455 = 3 x 5 x 97
b. 6525 = 3 x 3 x 5 x 5 x 29
Q14)
150 = 2 x 3 x 5 x 5
Q15)
36
Q16)
5
Q17)
a. Prime factors of 48 = 2 x 2 x 2 x 2 x 3
b. Prime factors of 18 = 2 x 3 x 3
Q18)
Highest Common Factor
Q19)
Factors of 18 are 1, 2, 3, 6, 9, 18.
Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36.
Common factors =1, 2, 3, 6, 9, 18.
HCF of 18 and 36 = 36
Q20)
10, 12, 14, 16, 18, 20
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