EduSahara™ Worksheet

EduSahara™ Assignment

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

Chapter : Real Numbers

Grade : SSC Grade X

License : Non Commercial Use

Question 1

1.

Find the prime factorization of
30

(i)

2

✕

3

✕

2
(ii)

2

✕

6

✕

5
(iii)

2

✕

3

✕

5
(iv)

2

✕

3

✕

4
(v)

2 2

✕

3

✕

5

Question 2

2.

Find the prime factorization of
91

(i)

7

✕

13
(ii)

9

✕

13
(iii)

7

✕

12
(iv)

4

✕

13
(v)

7

✕

13 2

Question 3

3.

Find the prime factorization of
832

(i)

2 6

✕

12
(ii)

2 6

✕

13
(iii)

2 6

✕

13 2
(iv)

4 6

✕

13
(v)

2 6

✕

11

Question 4

4.

Find the prime factorization of
1008

(i)

2 4

✕

3 2

✕

7
(ii)

2 4

✕

3

✕

7
(iii)

2 4

✕

3 2

✕

5
(iv)

2 4

✕

3 2

✕

7 2
(v)

2 4

✕

3 2

✕

9

Question 5

5.

Find the number of prime factors of
48

(i)

3
(ii)

4
(iii)

1
(iv)

0
(v)

2

Question 6

6.

Find the number of prime factors of
60

(i)

2
(ii)

0
(iii)

3
(iv)

4
(v)

1

Question 7

7.

Find the number of prime factors of
1078

(i)

2
(ii)

3
(iii)

4
(iv)

0
(v)

1

Question 8

8.

Find the number of prime factors of
6240

(i)

3
(ii)

5
(iii)

4
(iv)

2
(v)

7

Question 9

9.

Find the total number of factors of
25

(i)

2
(ii)

4
(iii)

0
(iv)

1
(v)

3

Question 10

10.

Find the total number of factors of
85

(i)

2
(ii)

5
(iii)

4
(iv)

7
(v)

3

Question 11

11.

Find the total number of factors of
352

(i)

13
(ii)

9
(iii)

11
(iv)

14
(v)

12

Question 12

12.

Find the total number of factors of
6720

(i)

57
(ii)

58
(iii)

55
(iv)

56
(v)

53

Question 13

13.

Find the HCF of
{8,9}

(i)

(-1)
(ii)

3
(iii)

2
(iv)

0
(v)

1

Question 14

14.

Find the HCF of
{18,14}

(i)

1
(ii)

4
(iii)

(-1)
(iv)

3
(v)

2

Question 15

15.

Find the HCF of
{48,9,15}

(i)

1
(ii)

2
(iii)

3
(iv)

4
(v)

5

Question 16

16.

Find the HCF of
{48,32,16,30}

(i)

5
(ii)

2
(iii)

0
(iv)

1
(v)

3

Question 17

17.

Find the HCF of
{50,120}

(i)

8
(ii)

13
(iii)

9
(iv)

10
(v)

11

Question 18

18.

Find the HCF of
{48,120}

(i)

21
(ii)

25
(iii)

27
(iv)

24
(v)

23

Question 19

19.

Find the HCF of
{250,100,420}

(i)

9
(ii)

13
(iii)

8
(iv)

11
(v)

10

Question 20

20.

Find the HCF of
{384,348,588,24}

(i)

9
(ii)

11
(iii)

15
(iv)

12
(v)

13

Question 21

21.

Find the LCM of
{9,4}

(i)

36
(ii)

38
(iii)

35
(iv)

33
(v)

37

Question 22

22.

Find the LCM of
{8,18}

(i)

74
(ii)

71
(iii)

69
(iv)

72
(v)

73

Question 23

23.

Find the LCM of
{14,18,6}

(i)

125
(ii)

123
(iii)

127
(iv)

126
(v)

128

Question 24

24.

Find the LCM of
{18,14,6,16}

(i)

1005
(ii)

1011
(iii)

1009
(iv)

1008
(v)

1007

Question 25

25.

Find the LCM of
{40,20}

(i)

37
(ii)

42
(iii)

41
(iv)

39
(v)

40

Question 26

26.

Find the LCM of
{120,280}

(i)

841
(ii)

843
(iii)

838
(iv)

840
(v)

839

Question 27

27.

Find the LCM of
{180,150,240}

(i)

3601
(ii)

3602
(iii)

3599
(iv)

3600
(v)

3597

Question 28

28.

Find the LCM of
{336,408,240,216}

(i)

257039
(ii)

257040
(iii)

257043
(iv)

257041
(v)

257038

Question 29

29.

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

(i)

72
(ii)

69
(iii)

75
(iv)

73
(v)

71

Question 30

30.

Find the product of LCM and HCF of
{6,12}

(i)

69
(ii)

73
(iii)

72
(iv)

71
(v)

75

Question 31

31.

Find the product of LCM and HCF of
{26,20,16}

(i)

2081
(ii)

2077
(iii)

2079
(iv)

2082
(v)

2080

Question 32

32.

Find the product of LCM and HCF of
{28,21,6,27}

(i)

756
(ii)

758
(iii)

753
(iv)

757
(v)

755

Assignment Key