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 product of LCM and HCF of
{8,9}

(i)

70
(ii)

72
(iii)

75
(iv)

73
(v)

71

Question 2

2.

Which of the following is a prime number?

(i)

26
(ii)

49
(iii)

36
(iv)

28
(v)

29

Question 3

3.

Find the LCM of
{760,800,400}

(i)

15200
(ii)

15197
(iii)

15203
(iv)

15199
(v)

15201

Question 4

4.

The common multiples of 5 and 7 =

(i)

{35,70,140,175,119}
(ii)

{35,105,140,175,86}
(iii)

{35,70,105,140,41}
(iv)

{35,70,105,140,175}
(v)

{35,70,105,140,183}

Question 5

5.

The simplest form of the fraction
168
312
is

(i)

7
15
(ii)

9
13
(iii)

7
13
(iv)

5
13
(v)

7
11

Question 6

6.

Find the prime factorization of
4160

(i)

2 6

✕

5

✕

16
(ii)

2 6

✕

4

✕

13
(iii)

2 6

✕

5

✕

13
(iv)

2 7

✕

5

✕

13
(v)

2 6

✕

3

✕

13

Question 7

7.

Find the LCM of
{900,780}

(i)

11701
(ii)

11699
(iii)

11700
(iv)

11702
(v)

11698

Question 8

8.

Find the number of prime factors of
420

(i)

5
(ii)

7
(iii)

4
(iv)

3
(v)

1

Question 9

9.

Find the prime factorization of
792

(i)

2 3

✕

3 2

✕

11
(ii)

2 3

✕

6 2

✕

11
(iii)

2 3

✕

0

✕

11
(iv)

2 4

✕

3 2

✕

11
(v)

2 3

✕

3 2

✕

10

Question 10

10.

Find the HCF of
{42,72}

(i)

6
(ii)

5
(iii)

9
(iv)

4
(v)

7

Question 11

11.

Find the number of prime factors of
9

(i)

1
(ii)

2
(iii)

4
(iv)

3
(v)

0

Question 12

12.

Find the LCM of
{100,280,260,140}

(i)

18200
(ii)

18203
(iii)

18201
(iv)

18199
(v)

18197

Question 13

13.

Find the product of LCM and HCF of
{4,27}

(i)

107
(ii)

108
(iii)

109
(iv)

111
(v)

105

Question 14

14.

The factors of 3 =

(i)

{1,3}
(ii)

{1,3,2}
(iii)

{2}
(iv)

{3,2}

Question 15

15.

Find the HCF of
{46,28,27}

(i)

3
(ii)

(-2)
(iii)

2
(iv)

0
(v)

1

Question 16

16.

Find the LCM of
{15,10,16}

(i)

241
(ii)

239
(iii)

238
(iv)

240
(v)

242

Question 17

17.

Find the total number of factors of
192

(i)

14
(ii)

12
(iii)

15
(iv)

13
(v)

17

Question 18

18.

Find the HCF of
{1380,780,2040}

(i)

58
(ii)

62
(iii)

61
(iv)

60
(v)

59

Question 19

19.

Find the HCF of
{14,16}

(i)

1
(ii)

4
(iii)

2
(iv)

3
(v)

0

Question 20

20.

The common multiples of 6 , 4 and 8 =

(i)

{24,48,72,96,120,144}
(ii)

{48,72,96,120,144,81}
(iii)

{48,72,96,120,144,147}
(iv)

{24,72,96,120,144,185}
(v)

{24,48,72,120,144,235}

Question 21

21.

Find the twin primes in the following

(i)

(2,5)
(ii)

(5,7)
(iii)

(2,7)
(iv)

(2,11)
(v)

(3,2)

Question 22

22.

Which of the following is a composite number?

(i)

32
(ii)

23
(iii)

7
(iv)

47
(v)

19

Question 23

23.

Find the number of prime factors of
9408

(i)

4
(ii)

0
(iii)

3
(iv)

1
(v)

2

Question 24

24.

The common multiples of 9 and 5 =

(i)

{45,90,135,180}
(ii)

{45,90,135,341}
(iii)

{90,135,180,164}
(iv)

{90,135,180,28}
(v)

{90,135,180,86}

Question 25

25.

Find the HCF of
{740,520,540,340}

(i)

19
(ii)

21
(iii)

20
(iv)

17
(v)

22

Assignment Key