EduSahara™ Worksheet

EduSahara™ Worksheet

Name : Chapter Based Worksheet

Chapter : Factors and Multiples

Grade : ICSE Grade VII

License : Non Commercial Use

Question 1

1.

The factors of 14 =

(i)

{1,2,7,14}
(ii)

{1,2,7,14,3,13}
(iii)

{2,14,13,3}
(iv)

{1,2,7}

Question 2

2.

Find the LCM of
{14,16,9,12}

(i)

1009
(ii)

1006
(iii)

1011
(iv)

1007
(v)

1008

Question 3

3.

Find the number of prime factors of
15876

(i)

3
(ii)

2
(iii)

0
(iv)

4
(v)

1

Question 4

4.

Find all common factors of 5 and 35

(i)

{1,7}
(ii)

{1,0}
(iii)

{1,5,0}
(iv)

{1,5,35}
(v)

{1,5}

Question 5

5.

Find the HCF of
{80,232}

(i)

9
(ii)

11
(iii)

6
(iv)

7
(v)

8

Question 6

6.

Find the total number of factors of
27

(i)

6
(ii)

4
(iii)

3
(iv)

1
(v)

5

Question 7

7.

Find the prime factorization of
32

(i)

2 6
(ii)

2 5
(iii)

2 4
(iv)

4 5
(v)

(-1) 5

Question 8

8.

Which of the following is an odd number?

(i)

24
(ii)

5
(iii)

34
(iv)

22
(v)

20

Question 9

9.

The multiples of 5 =

(i)

{5,10,15,20,25,30,24,4}
(ii)

{5,10,25,30,31,4}
(iii)

{5,10,15,20,25,30,9}
(iv)

{10,15,20,25,30,19}
(v)

{5,10,15,20,25,30}

Question 10

10.

Find the prime factorization of
6300

(i)

(-1) 2

✕

3 2

✕

5 2

✕

7
(ii)

2 3

✕

3 2

✕

5 2

✕

7
(iii)

2

✕

3 2

✕

5 2

✕

7
(iv)

5 2

✕

3 2

✕

5 2

✕

7
(v)

2 2

✕

3 2

✕

5 2

✕

7

Question 11

11.

Find the HCF of
{24,20,32}

(i)

3
(ii)

1
(iii)

4
(iv)

6
(v)

5

Question 12

12.

Find the LCM of
{6,8}

(i)

22
(ii)

23
(iii)

26
(iv)

25
(v)

24

Question 13

13.

Find the total number of factors of
210

(i)

16
(ii)

17
(iii)

13
(iv)

18
(v)

15

Question 14

14.

Find the number of prime factors of
1216

(i)

3
(ii)

0
(iii)

4
(iv)

2
(v)

1

Question 15

15.

The factors of 13 =

(i)

{1,13,12}
(ii)

{2,12}
(iii)

{1,13}
(iv)

{13,12}
(v)

{1,13,12,2}

Question 16

16.

Find the number of prime factors of
91

(i)

4
(ii)

1
(iii)

3
(iv)

0
(v)

2

Question 17

17.

The factors of 45 =

(i)

{3,5,9,15,45,44}
(ii)

{3,5,15,45,6,2}
(iii)

{1,3,5,9,15,45,4}
(iv)

{1,3,5,9,15,45,44,2}
(v)

{1,3,5,9,15,45}

Question 18

18.

Which of the following is a composite number?

(i)

19
(ii)

29
(iii)

9
(iv)

11
(v)

31

Question 19

19.

Find the number of prime factors of
38

(i)

3
(ii)

0
(iii)

2
(iv)

1
(v)

4

Question 20

20.

Find the product of LCM and HCF of
{8,9}

(i)

75
(ii)

70
(iii)

71
(iv)

73
(v)

72

Question 21

21.

Find the HCF of
{96,840,720}

(i)

25
(ii)

24
(iii)

23
(iv)

27
(v)

22

Question 22

22.

Reduce the fraction
5376
10752

(i)

1
2
(ii)

3
2
(iii)

1
(iv)

(
-1
2
)
(v)

1
4

Question 23

23.

Find the HCF of
{9,15,33,34}

(i)

4
(ii)

(-1)
(iii)

2
(iv)

0
(v)

1

Question 24

24.

Find the twin primes in the following

(i)

(2,5)
(ii)

(3,2)
(iii)

(3,7)
(iv)

(59,61)
(v)

(2,7)

Question 25

25.

Find the co-primes in the following

(i)

{20,96}
(ii)

{33,39}
(iii)

{11,13}
(iv)

{25,120}
(v)

{22,26}

Assignment Key