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
38

(i)

2

✕

19
(ii)

2 2

✕

19
(iii)

-1

✕

19
(iv)

2

✕

22
(v)

1

✕

19

Question 2

2.

Find the prime factorization of
76

(i)

2

✕

19
(ii)

2 2

✕

22
(iii)

2 2

✕

19
(iv)

2 -1

✕

19
(v)

2 3

✕

19

Question 3

3.

Find the prime factorization of
144

(i)

2 4

✕

3 3
(ii)

2 4

✕

3
(iii)

5 4

✕

3 2
(iv)

2

✕

3 2
(v)

2 4

✕

3 2

Question 4

4.

Find the prime factorization of
7840

(i)

2 5

✕

2

✕

7 2
(ii)

2 5

✕

5

✕

7 2
(iii)

2 5

✕

8

✕

7 2
(iv)

2 5

✕

5 2

✕

7 2
(v)

2 5

✕

5

✕

7

Question 5

5.

Find the number of prime factors of
8

(i)

3
(ii)

2
(iii)

0
(iv)

4
(v)

1

Question 6

6.

Find the number of prime factors of
52

(i)

3
(ii)

1
(iii)

4
(iv)

0
(v)

2

Question 7

7.

Find the number of prime factors of
364

(i)

1
(ii)

4
(iii)

0
(iv)

2
(v)

3

Question 8

8.

Find the number of prime factors of
960

(i)

2
(ii)

3
(iii)

4
(iv)

0
(v)

1

Question 9

9.

Find the total number of factors of
30

(i)

7
(ii)

8
(iii)

9
(iv)

5
(v)

11

Question 10

10.

Find the total number of factors of
86

(i)

4
(ii)

2
(iii)

5
(iv)

7
(v)

3

Question 11

11.

Find the total number of factors of
660

(i)

21
(ii)

26
(iii)

24
(iv)

23
(v)

25

Question 12

12.

Find the total number of factors of
1944

(i)

23
(ii)

27
(iii)

24
(iv)

22
(v)

25

Question 13

13.

Find the HCF of
{14,18}

(i)

2
(ii)

0
(iii)

3
(iv)

4
(v)

1

Question 14

14.

Find the HCF of
{30,32}

(i)

5
(ii)

(-1)
(iii)

3
(iv)

2
(v)

1

Question 15

15.

Find the HCF of
{39,9,46}

(i)

4
(ii)

0
(iii)

2
(iv)

1
(v)

(-1)

Question 16

16.

Find the HCF of
{26,40,38,34}

(i)

5
(ii)

3
(iii)

1
(iv)

2
(v)

0

Question 17

17.

Find the HCF of
{660,360}

(i)

59
(ii)

63
(iii)

60
(iv)

61
(v)

58

Question 18

18.

Find the HCF of
{144,792}

(i)

75
(ii)

69
(iii)

71
(iv)

72
(v)

73

Question 19

19.

Find the HCF of
{432,624,888}

(i)

22
(ii)

23
(iii)

24
(iv)

27
(v)

25

Question 20

20.

Find the HCF of
{696,984,552,480}

(i)

24
(ii)

25
(iii)

23
(iv)

26
(v)

22

Question 21

21.

Find the LCM of
{6,9}

(i)

15
(ii)

20
(iii)

18
(iv)

19
(v)

17

Question 22

22.

Find the LCM of
{16,4}

(i)

16
(ii)

14
(iii)

17
(iv)

15
(v)

18

Question 23

23.

Find the LCM of
{6,10,18}

(i)

88
(ii)

89
(iii)

91
(iv)

93
(v)

90

Question 24

24.

Find the LCM of
{8,9,16,6}

(i)

142
(ii)

145
(iii)

146
(iv)

143
(v)

144

Question 25

25.

Find the LCM of
{18,60}

(i)

181
(ii)

177
(iii)

182
(iv)

179
(v)

180

Question 26

26.

Find the LCM of
{240,280}

(i)

1680
(ii)

1677
(iii)

1681
(iv)

1682
(v)

1679

Question 27

27.

Find the LCM of
{200,520,80}

(i)

5201
(ii)

5200
(iii)

5203
(iv)

5197
(v)

5199

Question 28

28.

Find the LCM of
{180,480,210,60}

(i)

10081
(ii)

10079
(iii)

10077
(iv)

10083
(v)

10080

Question 29

29.

Find the product of LCM and HCF of
{4,8}

(i)

32
(ii)

31
(iii)

33
(iv)

29
(v)

35

Question 30

30.

Find the product of LCM and HCF of
{16,6}

(i)

98
(ii)

97
(iii)

95
(iv)

96
(v)

94

Question 31

31.

Find the product of LCM and HCF of
{25,27,6}

(i)

1349
(ii)

1350
(iii)

1351
(iv)

1353
(v)

1348

Question 32

32.

Find the product of LCM and HCF of
{15,10,26,24}

(i)

1562
(ii)

1558
(iii)

1559
(iv)

1560
(v)

1561

Assignment Key