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
21

(i)

3 -1

✕

7
(ii)

3

✕

6
(iii)

3 2

✕

7
(iv)

3

✕

9
(v)

3

✕

7

Question 2

2.

Find the prime factorization of
95

(i)

5

✕

19 2
(ii)

4

✕

19
(iii)

8

✕

19
(iv)

3

✕

19
(v)

5

✕

19

Question 3

3.

Find the prime factorization of
1029

(i)

3

✕

7 3
(ii)

3 2

✕

7 3
(iii)

3

✕

4 3
(iv)

2

✕

7 3
(v)

6

✕

7 3

Question 4

4.

Find the prime factorization of
2464

(i)

2 5

✕

6

✕

11
(ii)

2 5

✕

7

✕

11 2
(iii)

2 5

✕

7

✕

9
(iv)

2 5

✕

7

✕

11
(v)

4 5

✕

7

✕

11

Question 5

5.

Find the number of prime factors of
20

(i)

2
(ii)

4
(iii)

0
(iv)

1
(v)

3

Question 6

6.

Find the number of prime factors of
85

(i)

4
(ii)

2
(iii)

3
(iv)

1
(v)

0

Question 7

7.

Find the number of prime factors of
288

(i)

0
(ii)

2
(iii)

3
(iv)

1
(v)

4

Question 8

8.

Find the number of prime factors of
672

(i)

2
(ii)

0
(iii)

1
(iv)

3
(v)

4

Question 9

9.

Find the total number of factors of
14

(i)

2
(ii)

3
(iii)

7
(iv)

5
(v)

4

Question 10

10.

Find the total number of factors of
78

(i)

6
(ii)

8
(iii)

11
(iv)

7
(v)

9

Question 11

11.

Find the total number of factors of
1274

(i)

10
(ii)

13
(iii)

15
(iv)

11
(v)

12

Question 12

12.

Find the total number of factors of
6048

(i)

50
(ii)

49
(iii)

47
(iv)

46
(v)

48

Question 13

13.

Find the HCF of
{10,15}

(i)

5
(ii)

8
(iii)

3
(iv)

4
(v)

6

Question 14

14.

Find the HCF of
{27,34}

(i)

2
(ii)

(-2)
(iii)

1
(iv)

3
(v)

0

Question 15

15.

Find the HCF of
{44,6,10}

(i)

2
(ii)

5
(iii)

0
(iv)

3
(v)

1

Question 16

16.

Find the HCF of
{26,12,35,32}

(i)

2
(ii)

(-2)
(iii)

0
(iv)

4
(v)

1

Question 17

17.

Find the HCF of
{132,48}

(i)

12
(ii)

9
(iii)

11
(iv)

13
(v)

14

Question 18

18.

Find the HCF of
{48,864}

(i)

48
(ii)

51
(iii)

47
(iv)

49
(v)

45

Question 19

19.

Find the HCF of
{294,126,72}

(i)

4
(ii)

5
(iii)

8
(iv)

6
(v)

7

Question 20

20.

Find the HCF of
{552,432,336,252}

(i)

14
(ii)

11
(iii)

12
(iv)

10
(v)

13

Question 21

21.

Find the LCM of
{9,8}

(i)

72
(ii)

74
(iii)

73
(iv)

71
(v)

69

Question 22

22.

Find the LCM of
{16,18}

(i)

145
(ii)

146
(iii)

144
(iv)

142
(v)

143

Question 23

23.

Find the LCM of
{6,8,10}

(i)

121
(ii)

120
(iii)

117
(iv)

123
(v)

119

Question 24

24.

Find the LCM of
{8,6,15,18}

(i)

358
(ii)

359
(iii)

361
(iv)

360
(v)

362

Question 25

25.

Find the LCM of
{32,64}

(i)

63
(ii)

64
(iii)

66
(iv)

62
(v)

65

Question 26

26.

Find the LCM of
{480,420}

(i)

3357
(ii)

3361
(iii)

3360
(iv)

3363
(v)

3359

Question 27

27.

Find the LCM of
{360,210,240}

(i)

5040
(ii)

5038
(iii)

5039
(iv)

5042
(v)

5041

Question 28

28.

Find the LCM of
{132,108,96,60}

(i)

47522
(ii)

47521
(iii)

47517
(iv)

47519
(v)

47520

Question 29

29.

Find the product of LCM and HCF of
{6,4}

(i)

23
(ii)

27
(iii)

25
(iv)

22
(v)

24

Question 30

30.

Find the product of LCM and HCF of
{25,9}

(i)

225
(ii)

226
(iii)

227
(iv)

224
(v)

222

Question 31

31.

Find the product of LCM and HCF of
{26,20,15}

(i)

780
(ii)

781
(iii)

783
(iv)

777
(v)

779

Question 32

32.

Find the product of LCM and HCF of
{15,8,16,12}

(i)

240
(ii)

238
(iii)

239
(iv)

241
(v)

242

Assignment Key