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 LCM of
{8,14,18,6}

(i)

507
(ii)

504
(iii)

501
(iv)

505
(v)

503

Question 2

2.

Find the product of LCM and HCF of
{18,14,6}

(i)

253
(ii)

252
(iii)

251
(iv)

255
(v)

249

Question 3

3.

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

(i)

73
(ii)

71
(iii)

70
(iv)

72
(v)

74

Question 4

4.

Find all common factors of 49 and 37

(i)

{1,7}
(ii)

{7}
(iii)

{37}
(iv)

{1}
(v)

{1,37}

Question 5

5.

Find the LCM of
{9,18}

(i)

18
(ii)

15
(iii)

19
(iv)

21
(v)

17

Question 6

6.

Find the product of LCM and HCF of
{25,26}

(i)

648
(ii)

650
(iii)

652
(iv)

649
(v)

651

Question 7

7.

Find the prime factorization of
1760

(i)

5 5

✕

5

✕

11
(ii)

2 5

✕

4

✕

11
(iii)

2 5

✕

5

✕

11 2
(iv)

2 5

✕

5

✕

8
(v)

2 5

✕

5

✕

11

Question 8

8.

The factors of 43 =

(i)

{1,43,2,42}
(ii)

{1,43}
(iii)

{1,2}
(iv)

{2,42}
(v)

{1,43,42}

Question 9

9.

The simplest form of the fraction
58
319
is

(i)

2
11
(ii)

2
9
(iii)

2
13
(iv)

0
(v)

4
11

Question 10

10.

Find the twin primes in the following

(i)

(2,7)
(ii)

(2,11)
(iii)

(3,2)
(iv)

(17,19)
(v)

(3,7)

Question 11

11.

Find all common factors of 44 , 21 and 14

(i)

{1,22}
(ii)

{21}
(iii)

{1}
(iv)

{11}
(v)

{1,21}

Question 12

12.

The multiples of 12 =

(i)

{24,36,48,60,25,73}
(ii)

{12,24,36,48,60,72}
(iii)

{12,24,36,48,60,72,47,37}
(iv)

{12,24,48,60,72,25}
(v)

{12,24,36,48,60,72,25}

Question 13

13.

Find all common factors of 5 and 7

(i)

{7}
(ii)

{1,7}
(iii)

{1}
(iv)

{5}
(v)

{1,5}

Question 14

14.

Find the HCF of
{285,45}

(i)

16
(ii)

12
(iii)

14
(iv)

17
(v)

15

Question 15

15.

Find the HCF of
{10,27}

(i)

1
(ii)

2
(iii)

(-2)
(iv)

3
(v)

0

Question 16

16.

Find the HCF of
{264,192}

(i)

23
(ii)

25
(iii)

24
(iv)

22
(v)

26

Question 17

17.

Find the number of prime factors of
108

(i)

4
(ii)

3
(iii)

0
(iv)

2
(v)

1

Question 18

18.

Find the HCF of
{20,8,22,4}

(i)

2
(ii)

(-1)
(iii)

5
(iv)

3
(v)

1

Question 19

19.

Find the HCF of
{6,18}

(i)

5
(ii)

9
(iii)

6
(iv)

3
(v)

7

Question 20

20.

The multiples of 19 =

(i)

{19,38,57,76,95,114,96,115}
(ii)

{19,38,57,76,95,114}
(iii)

{19,38,57,76,95,114,20}
(iv)

{19,38,57,95,114,37}
(v)

{19,57,95,114,115,20}

Question 21

21.

Which of the following is a composite number?

(i)

17
(ii)

32
(iii)

31
(iv)

47
(v)

3

Question 22

22.

Find the HCF of
{48,26,22}

(i)

2
(ii)

(-1)
(iii)

5
(iv)

1
(v)

3

Question 23

23.

The common multiples of 5 and 7 =

(i)

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

{70,105,140,175,267}
(iii)

{35,70,105,175,186}
(iv)

{35,70,105,175,19}
(v)

{35,105,140,175,258}

Question 24

24.

Find the prime factorization of
63

(i)

3 2

✕

7
(ii)

3

✕

7
(iii)

3 2

✕

7 2
(iv)

3 2

✕

9
(v)

3 2

✕

4

Question 25

25.

Find the number of prime factors of
3276

(i)

1
(ii)

6
(iii)

3
(iv)

5
(v)

4

Assignment Key