EduSahara™ Worksheet

EduSahara™ Assignment

Name : Prime Factorization and L.C.M and H.C.F

Chapter : Real Numbers

Grade : CBSE Grade X

License : Non Commercial Use

Question 1

1.

Find the prime factorization of
44

(i)

2 2

✕

10
(ii)

2 2

✕

11 2
(iii)

2 2

✕

8
(iv)

4 2

✕

11
(v)

2 2

✕

11

Question 2

2.

Find the prime factorization of
77

(i)

7

✕

10
(ii)

7

✕

11
(iii)

4

✕

11
(iv)

7

✕

11 2
(v)

9

✕

11

Question 3

3.

Find the prime factorization of
392

(i)

2 3

✕

7 2
(ii)

2 3

✕

5 2
(iii)

2 3

✕

7
(iv)

2 4

✕

7 2
(v)

4 3

✕

7 2

Question 4

4.

Find the prime factorization of
1440

(i)

2 5

✕

5 2

✕

5
(ii)

2 5

✕

3 3

✕

5
(iii)

2 5

✕

3 2

✕

4
(iv)

2 5

✕

3 2

✕

5
(v)

2 5

✕

3 2

✕

2

Question 5

5.

Find the number of prime factors of
39

(i)

2
(ii)

3
(iii)

1
(iv)

4
(v)

0

Question 6

6.

Find the number of prime factors of
68

(i)

0
(ii)

4
(iii)

2
(iv)

1
(v)

3

Question 7

7.

Find the number of prime factors of
1056

(i)

0
(ii)

3
(iii)

4
(iv)

2
(v)

1

Question 8

8.

Find the number of prime factors of
480

(i)

3
(ii)

1
(iii)

2
(iv)

4
(v)

0

Question 9

9.

Find the total number of factors of
6

(i)

2
(ii)

3
(iii)

6
(iv)

5
(v)

4

Question 10

10.

Find the total number of factors of
93

(i)

7
(ii)

5
(iii)

3
(iv)

1
(v)

4

Question 11

11.

Find the total number of factors of
240

(i)

19
(ii)

18
(iii)

23
(iv)

20
(v)

21

Question 12

12.

Find the total number of factors of
2160

(i)

40
(ii)

39
(iii)

37
(iv)

42
(v)

41

Question 13

13.

Find the HCF of
{15,18}

(i)

3
(ii)

1
(iii)

4
(iv)

2
(v)

5

Question 14

14.

Find the HCF of
{4,34}

(i)

1
(ii)

2
(iii)

3
(iv)

(-1)
(v)

4

Question 15

15.

Find the HCF of
{45,12,40}

(i)

0
(ii)

1
(iii)

(-2)
(iv)

2
(v)

4

Question 16

16.

Find the HCF of
{35,45,28,20}

(i)

(-1)
(ii)

0
(iii)

2
(iv)

1
(v)

4

Question 17

17.

Find the HCF of
{312,96}

(i)

23
(ii)

25
(iii)

24
(iv)

22
(v)

26

Question 18

18.

Find the HCF of
{560,1360}

(i)

81
(ii)

82
(iii)

78
(iv)

80
(v)

79

Question 19

19.

Find the HCF of
{420,315,105}

(i)

105
(ii)

104
(iii)

106
(iv)

103
(v)

108

Question 20

20.

Find the HCF of
{576,204,96,432}

(i)

9
(ii)

14
(iii)

11
(iv)

13
(v)

12

Question 21

21.

Find the LCM of
{6,9}

(i)

17
(ii)

18
(iii)

19
(iv)

21
(v)

15

Question 22

22.

Find the LCM of
{9,6}

(i)

17
(ii)

18
(iii)

21
(iv)

19
(v)

16

Question 23

23.

Find the LCM of
{4,15,8}

(i)

119
(ii)

120
(iii)

123
(iv)

118
(v)

121

Question 24

24.

Find the LCM of
{14,10,18,6}

(i)

629
(ii)

628
(iii)

633
(iv)

630
(v)

631

Question 25

25.

Find the LCM of
{48,80}

(i)

240
(ii)

241
(iii)

242
(iv)

237
(v)

239

Question 26

26.

Find the LCM of
{380,300}

(i)

5700
(ii)

5701
(iii)

5703
(iv)

5699
(v)

5698

Question 27

27.

Find the LCM of
{72,108,216}

(i)

217
(ii)

219
(iii)

214
(iv)

216
(v)

215

Question 28

28.

Find the LCM of
{60,228,36,96}

(i)

27360
(ii)

27358
(iii)

27362
(iv)

27361
(v)

27359

Question 29

29.

Find the product of LCM and HCF of
{6,8}

(i)

48
(ii)

46
(iii)

49
(iv)

51
(v)

47

Question 30

30.

Find the product of LCM and HCF of
{15,24}

(i)

363
(ii)

360
(iii)

359
(iv)

361
(v)

358

Question 31

31.

Find the product of LCM and HCF of
{14,28,25}

(i)

699
(ii)

698
(iii)

700
(iv)

703
(v)

701

Question 32

32.

Find the product of LCM and HCF of
{28,26,9,14}

(i)

3277
(ii)

3278
(iii)

3273
(iv)

3275
(v)

3276

Assignment Key