EduSahara™ Worksheet

EduSahara™ Assignment

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

Chapter : Factors and Multiples

Grade : ICSE Grade VIII

License : Non Commercial Use

Question 1

1.

Find the HCF of
{15,12}

(i)

2
(ii)

3
(iii)

4
(iv)

1
(v)

6

Question 2

2.

Find the HCF of
{46,36,44}

(i)

3
(ii)

5
(iii)

1
(iv)

2
(v)

0

Question 3

3.

Find the HCF of
{162,78,270,150}

(i)

5
(ii)

6
(iii)

3
(iv)

7
(v)

9

Question 4

4.

Find the LCM of
{8,6}

(i)

27
(ii)

25
(iii)

23
(iv)

22
(v)

24

Question 5

5.

Find the LCM of
{16,12,8}

(i)

50
(ii)

48
(iii)

49
(iv)

47
(v)

45

Question 6

6.

Find the LCM of
{16,10,8,4}

(i)

78
(ii)

79
(iii)

81
(iv)

80
(v)

82

Question 7

7.

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

(i)

47
(ii)

49
(iii)

51
(iv)

48
(v)

46

Question 8

8.

Find the product of LCM and HCF of
{21,16,18}

(i)

1010
(ii)

1008
(iii)

1009
(iv)

1005
(v)

1007

Question 9

9.

Find the product of LCM and HCF of
{21,10,22,28}

(i)

4621
(ii)

4620
(iii)

4623
(iv)

4617
(v)

4619

Question 10

10.

Find the prime factorization of
27

(i)

3 3
(ii)

1
(iii)

3 4
(iv)

3 2
(v)

6 3

Question 11

11.

Find the prime factorization of
57

(i)

1

✕

19
(ii)

3 2

✕

19
(iii)

3

✕

19
(iv)

2

✕

19
(v)

3

✕

22

Question 12

12.

Find the prime factorization of
192

(i)

2 7

✕

3
(ii)

2 5

✕

3
(iii)

(-1) 6

✕

3
(iv)

2 6

✕

3
(v)

2 6

✕

5

Question 13

13.

Find the prime factorization of
3360

(i)

2 5

✕

3

✕

5

✕

4
(ii)

2 5

✕

3

✕

5 2

✕

7
(iii)

2 5

✕

3

✕

5

✕

7
(iv)

2 5

✕

3

✕

5

✕

6
(v)

5 5

✕

3

✕

5

✕

7

Question 14

14.

Find the number of prime factors of
22

(i)

2
(ii)

0
(iii)

3
(iv)

1
(v)

4

Question 15

15.

Find the number of prime factors of
99

(i)

0
(ii)

1
(iii)

4
(iv)

3
(v)

2

Question 16

16.

Find the number of prime factors of
162

(i)

2
(ii)

3
(iii)

4
(iv)

0
(v)

1

Question 17

17.

Find the number of prime factors of
10560

(i)

4
(ii)

3
(iii)

7
(iv)

5
(v)

1

Question 18

18.

Find the HCF of
{40,15}

(i)

4
(ii)

5
(iii)

3
(iv)

8
(v)

6

Question 19

19.

Find the HCF of
{38,20,48,32}

(i)

2
(ii)

0
(iii)

1
(iv)

3
(v)

4

Question 20

20.

Find the HCF of
{80,100}

(i)

20
(ii)

22
(iii)

19
(iv)

21
(v)

17

Question 21

21.

Find the HCF of
{504,108}

(i)

38
(ii)

33
(iii)

36
(iv)

37
(v)

35

Question 22

22.

Find the HCF of
{208,320,272}

(i)

17
(ii)

15
(iii)

19
(iv)

16
(v)

14

Question 23

23.

Find the LCM of
{14,6}

(i)

43
(ii)

39
(iii)

44
(iv)

42
(v)

41

Question 24

24.

Find the LCM of
{48,64}

(i)

190
(ii)

194
(iii)

192
(iv)

191
(v)

193

Question 25

25.

Find the LCM of
{110,20}

(i)

222
(ii)

221
(iii)

219
(iv)

218
(v)

220

Question 26

26.

Find the LCM of
{600,320,400}

(i)

4801
(ii)

4797
(iii)

4799
(iv)

4800
(v)

4802

Question 27

27.

Find the LCM of
{200,100,380,280}

(i)

26603
(ii)

26599
(iii)

26597
(iv)

26600
(v)

26601

Question 28

28.

Find the product of LCM and HCF of
{10,8}

(i)

80
(ii)

77
(iii)

82
(iv)

79
(v)

81

Assignment Key