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
{16,4}

(i)

3
(ii)

7
(iii)

5
(iv)

4
(v)

2

Question 2

2.

Find the HCF of
{18,28,9}

(i)

1
(ii)

3
(iii)

2
(iv)

(-2)
(v)

0

Question 3

3.

Find the HCF of
{528,552,288,228}

(i)

12
(ii)

13
(iii)

14
(iv)

11
(v)

10

Question 4

4.

Find the LCM of
{6,9}

(i)

18
(ii)

21
(iii)

19
(iv)

15
(v)

17

Question 5

5.

Find the LCM of
{10,8,16}

(i)

78
(ii)

81
(iii)

80
(iv)

79
(v)

83

Question 6

6.

Find the LCM of
{18,12,15,16}

(i)

719
(ii)

721
(iii)

720
(iv)

718
(v)

723

Question 7

7.

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

(i)

33
(ii)

29
(iii)

32
(iv)

31
(v)

35

Question 8

8.

Find the product of LCM and HCF of
{27,15,20}

(i)

540
(ii)

541
(iii)

537
(iv)

543
(v)

539

Question 9

9.

Find the product of LCM and HCF of
{10,9,12,20}

(i)

181
(ii)

180
(iii)

183
(iv)

178
(v)

179

Question 10

10.

Find the prime factorization of
33

(i)

2

✕

11
(ii)

3

✕

11
(iii)

3 2

✕

11
(iv)

5

✕

11
(v)

3 -1

✕

11

Question 11

11.

Find the prime factorization of
91

(i)

10

✕

13
(ii)

7

✕

13
(iii)

7

✕

13 2
(iv)

4

✕

13
(v)

6

✕

13

Question 12

12.

Find the prime factorization of
420

(i)

2 2

✕

3

✕

5

✕

9
(ii)

2 3

✕

3

✕

5

✕

7
(iii)

2 2

✕

1

✕

5

✕

7
(iv)

2 2

✕

2

✕

5

✕

7
(v)

2 2

✕

3

✕

5

✕

7

Question 13

13.

Find the prime factorization of
2160

(i)

2 4

✕

3 3

✕

5
(ii)

2 4

✕

3 3

✕

5 2
(iii)

(-1) 4

✕

3 3

✕

5
(iv)

2 3

✕

3 3

✕

5
(v)

4 4

✕

3 3

✕

5

Question 14

14.

Find the number of prime factors of
12

(i)

1
(ii)

3
(iii)

0
(iv)

2
(v)

4

Question 15

15.

Find the number of prime factors of
56

(i)

3
(ii)

4
(iii)

0
(iv)

2
(v)

1

Question 16

16.

Find the number of prime factors of
1196

(i)

4
(ii)

3
(iii)

2
(iv)

1
(v)

0

Question 17

17.

Find the number of prime factors of
2016

(i)

0
(ii)

3
(iii)

2
(iv)

4
(v)

1

Question 18

18.

Find the HCF of
{36,46}

(i)

2
(ii)

5
(iii)

3
(iv)

0
(v)

1

Question 19

19.

Find the HCF of
{14,22,6,8}

(i)

1
(ii)

2
(iii)

3
(iv)

(-1)
(v)

5

Question 20

20.

Find the HCF of
{340,380}

(i)

17
(ii)

19
(iii)

21
(iv)

20
(v)

23

Question 21

21.

Find the HCF of
{312,744}

(i)

24
(ii)

27
(iii)

23
(iv)

25
(v)

22

Question 22

22.

Find the HCF of
{240,400,300}

(i)

20
(ii)

21
(iii)

22
(iv)

17
(v)

19

Question 23

23.

Find the LCM of
{8,6}

(i)

23
(ii)

26
(iii)

24
(iv)

22
(v)

25

Question 24

24.

Find the LCM of
{135,120}

(i)

1077
(ii)

1080
(iii)

1081
(iv)

1079
(v)

1083

Question 25

25.

Find the LCM of
{96,24}

(i)

96
(ii)

95
(iii)

99
(iv)

97
(v)

94

Question 26

26.

Find the LCM of
{210,180,120}

(i)

2520
(ii)

2519
(iii)

2521
(iv)

2523
(v)

2518

Question 27

27.

Find the LCM of
{16,72,128,96}

(i)

1153
(ii)

1154
(iii)

1151
(iv)

1152
(v)

1149

Question 28

28.

Find the product of LCM and HCF of
{9,27}

(i)

243
(ii)

244
(iii)

242
(iv)

245
(v)

241

Assignment Key