EduSahara™ Worksheet

EduSahara™ Worksheet

Name : Chapter Based Worksheet

Chapter : Factors and Multiples

Grade : ICSE Grade VII

License : Non Commercial Use

Question 1

1.

Find the HCF of
{96,528,840}

(i)

26
(ii)

22
(iii)

24
(iv)

25
(v)

23

Question 2

2.

Find the prime factorization of
21

(i)

3

✕

6
(ii)

3

✕

5
(iii)

3 2

✕

7
(iv)

3

✕

7
(v)

3

✕

10

Question 3

3.

Find the total number of factors of
432

(i)

19
(ii)

23
(iii)

20
(iv)

21
(v)

17

Question 4

4.

Find the LCM of
{100,180}

(i)

902
(ii)

901
(iii)

900
(iv)

898
(v)

899

Question 5

5.

The multiples of 8 =

(i)

{8,16,24,32,40,48,47,17}
(ii)

{8,16,24,40,47,7}
(iii)

{8,16,24,32,40,48}
(iv)

{8,16,32,40,48,17}
(v)

{8,16,24,32,40,48,47}

Question 6

6.

Find all common factors of 30 , 44 and 28

(i)

{1,2}
(ii)

{1,2,10}
(iii)

{1,2,22}
(iv)

{1,22}
(v)

{2,3}

Question 7

7.

Find the number of prime factors of
3150

(i)

1
(ii)

3
(iii)

7
(iv)

4
(v)

5

Question 8

8.

Find the product of LCM and HCF of
{28,18,25}

(i)

6297
(ii)

6301
(iii)

6302
(iv)

6300
(v)

6299

Question 9

9.

Find the LCM of
{10,15,9}

(i)

91
(ii)

89
(iii)

90
(iv)

93
(v)

87

Question 10

10.

Which of the following is a prime number?

(i)

39
(ii)

12
(iii)

25
(iv)

41
(v)

4

Question 11

11.

Find the total number of factors of
77

(i)

5
(ii)

4
(iii)

2
(iv)

7
(v)

3

Question 12

12.

Find the LCM of
{210,270,300,450}

(i)

18899
(ii)

18898
(iii)

18901
(iv)

18903
(v)

18900

Question 13

13.

The multiples of 9 =

(i)

{9,18,45,54,53,8}
(ii)

{9,18,27,36,45,54,35}
(iii)

{9,18,27,36,45,54}
(iv)

{9,18,27,36,54,35}
(v)

{9,18,27,36,45,54,35,26}

Question 14

14.

Find the twin primes in the following

(i)

(2,5)
(ii)

(2,11)
(iii)

(2,7)
(iv)

(3,2)
(v)

(29,31)

Question 15

15.

Find the HCF of
{880,1040}

(i)

79
(ii)

78
(iii)

81
(iv)

82
(v)

80

Question 16

16.

Find the number of prime factors of
1216

(i)

0
(ii)

4
(iii)

1
(iv)

2
(v)

3

Question 17

17.

Find the prime factorization of
2304

(i)

2 8

✕

3 2
(ii)

2 8

✕

3
(iii)

2 6

✕

3 2
(iv)

2 9

✕

3 2
(v)

4 8

✕

3 2

Question 18

18.

Reduce the fraction
49896
72576

(i)

13
16
(ii)

11
14
(iii)

11
16
(iv)

11
18
(v)

9
16

Question 19

19.

Find the HCF of
{10,32}

(i)

2
(ii)

4
(iii)

(-1)
(iv)

1
(v)

3

Question 20

20.

The multiples of 8 =

(i)

{8,16,24,32,40,48,23,41}
(ii)

{8,16,24,32,40,48}
(iii)

{16,24,32,40,15,7}
(iv)

{8,24,32,40,48,15}
(v)

{8,16,24,32,40,48,41}

Question 21

21.

Find the number of prime factors of
94

(i)

0
(ii)

3
(iii)

4
(iv)

1
(v)

2

Question 22

22.

Find the LCM of
{360,780,540}

(i)

14039
(ii)

14042
(iii)

14041
(iv)

14040
(v)

14037

Question 23

23.

Find the HCF of
{264,12,234,204}

(i)

5
(ii)

9
(iii)

4
(iv)

7
(v)

6

Question 24

24.

Find the HCF of
{4,22,26}

(i)

1
(ii)

0
(iii)

5
(iv)

2
(v)

3

Question 25

25.

The simplest form of the fraction
175
225
is

(i)

1
(ii)

7
11
(iii)

7
9
(iv)

5
9

Assignment Key