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
{8,14}

(i)

4
(ii)

3
(iii)

0
(iv)

2
(v)

1

Question 2

2.

Find the HCF of
{32,45,14}

(i)

3
(ii)

0
(iii)

1
(iv)

2
(v)

(-1)

Question 3

3.

Find the HCF of
{348,228,468,372}

(i)

13
(ii)

15
(iii)

11
(iv)

12
(v)

9

Question 4

4.

Find the LCM of
{9,6}

(i)

18
(ii)

21
(iii)

17
(iv)

15
(v)

19

Question 5

5.

Find the LCM of
{15,4,6}

(i)

59
(ii)

62
(iii)

58
(iv)

60
(v)

61

Question 6

6.

Find the LCM of
{16,12,14,18}

(i)

1009
(ii)

1011
(iii)

1008
(iv)

1007
(v)

1006

Question 7

7.

Find the product of LCM and HCF of
{4,9}

(i)

35
(ii)

36
(iii)

34
(iv)

38
(v)

37

Question 8

8.

Find the product of LCM and HCF of
{22,14,25}

(i)

3850
(ii)

3851
(iii)

3853
(iv)

3847
(v)

3849

Question 9

9.

Find the product of LCM and HCF of
{26,16,4,20}

(i)

2083
(ii)

2079
(iii)

2080
(iv)

2081
(v)

2077

Question 10

10.

Find the prime factorization of
26

(i)

2

✕

12
(ii)

2

✕

13
(iii)

4

✕

13
(iv)

2

✕

10
(v)

2

✕

13 2

Question 11

11.

Find the prime factorization of
74

(i)

2

✕

34
(ii)

2

✕

37
(iii)

2

✕

37 2
(iv)

1

✕

37
(v)

4

✕

37

Question 12

12.

Find the prime factorization of
588

(i)

2 2

✕

6

✕

7 2
(ii)

2 2

✕

2

✕

7 2
(iii)

2 2

✕

1

✕

7 2
(iv)

2 2

✕

3

✕

7 2
(v)

2 3

✕

3

✕

7 2

Question 13

13.

Find the prime factorization of
288

(i)

2 6

✕

3 2
(ii)

2 5

✕

3
(iii)

2 5

✕

3 2
(iv)

2 5

✕

6 2
(v)

(-1) 5

✕

3 2

Question 14

14.

Find the number of prime factors of
15

(i)

3
(ii)

4
(iii)

1
(iv)

2
(v)

0

Question 15

15.

Find the number of prime factors of
64

(i)

1
(ii)

0
(iii)

3
(iv)

4
(v)

2

Question 16

16.

Find the number of prime factors of
320

(i)

4
(ii)

1
(iii)

0
(iv)

2
(v)

3

Question 17

17.

Find the number of prime factors of
4320

(i)

3
(ii)

2
(iii)

0
(iv)

1
(v)

4

Question 18

18.

Find the HCF of
{16,20}

(i)

1
(ii)

7
(iii)

4
(iv)

5
(v)

3

Question 19

19.

Find the HCF of
{10,4,16,48}

(i)

2
(ii)

4
(iii)

0
(iv)

1
(v)

3

Question 20

20.

Find the HCF of
{192,156}

(i)

11
(ii)

12
(iii)

14
(iv)

10
(v)

13

Question 21

21.

Find the HCF of
{24,264}

(i)

26
(ii)

23
(iii)

21
(iv)

25
(v)

24

Question 22

22.

Find the HCF of
{48,312,1200}

(i)

25
(ii)

21
(iii)

26
(iv)

23
(v)

24

Question 23

23.

Find the LCM of
{12,10}

(i)

61
(ii)

59
(iii)

62
(iv)

57
(v)

60

Question 24

24.

Find the LCM of
{100,80}

(i)

400
(ii)

401
(iii)

402
(iv)

398
(v)

399

Question 25

25.

Find the LCM of
{18,96}

(i)

289
(ii)

287
(iii)

286
(iv)

288
(v)

291

Question 26

26.

Find the LCM of
{90,225,210}

(i)

3147
(ii)

3151
(iii)

3149
(iv)

3150
(v)

3152

Question 27

27.

Find the LCM of
{66,78,84,96}

(i)

96097
(ii)

96095
(iii)

96096
(iv)

96099
(v)

96094

Question 28

28.

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

(i)

244
(ii)

246
(iii)

242
(iv)

243
(v)

240

Assignment Key