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
{8,10}

(i)

2
(ii)

1
(iii)

0
(iv)

3
(v)

4

Question 2

2.

Find the HCF of
{39,44,28}

(i)

(-2)
(ii)

1
(iii)

2
(iv)

4
(v)

0

Question 3

3.

Find the HCF of
{150,900,1320,1290}

(i)

27
(ii)

29
(iii)

30
(iv)

31
(v)

32

Question 4

4.

Find the LCM of
{6,4}

(i)

14
(ii)

10
(iii)

11
(iv)

12
(v)

13

Question 5

5.

Find the LCM of
{9,15,8}

(i)

359
(ii)

363
(iii)

361
(iv)

358
(v)

360

Question 6

6.

Find the LCM of
{12,18,10,14}

(i)

1258
(ii)

1261
(iii)

1260
(iv)

1259
(v)

1263

Question 7

7.

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

(i)

31
(ii)

35
(iii)

30
(iv)

32
(v)

33

Question 8

8.

Find the product of LCM and HCF of
{20,6,12}

(i)

117
(ii)

121
(iii)

120
(iv)

122
(v)

119

Question 9

9.

Find the product of LCM and HCF of
{16,4,25,8}

(i)

402
(ii)

398
(iii)

400
(iv)

401
(v)

399

Question 10

10.

Find the prime factorization of
25

(i)

5 2
(ii)

5 3
(iii)

8 2
(iv)

5
(v)

2 2

Question 11

11.

Find the prime factorization of
75

(i)

3

✕

7 2
(ii)

3 2

✕

5 2
(iii)

3

✕

5 2
(iv)

2

✕

5 2
(v)

3

✕

2 2

Question 12

12.

Find the prime factorization of
1320

(i)

2 2

✕

3

✕

5

✕

11
(ii)

2 3

✕

3 2

✕

5

✕

11
(iii)

2 3

✕

1

✕

5

✕

11
(iv)

2 3

✕

3

✕

5

✕

11
(v)

2 3

✕

3

✕

7

✕

11

Question 13

13.

Find the prime factorization of
7200

(i)

2 4

✕

3 2

✕

5 2
(ii)

2 5

✕

3 2

✕

5 3
(iii)

2 5

✕

3 2

✕

5 2
(iv)

2 2

✕

3 2

✕

5 2
(v)

2 5

✕

3 2

✕

7 2

Question 14

14.

Find the number of prime factors of
8

(i)

0
(ii)

1
(iii)

4
(iv)

3
(v)

2

Question 15

15.

Find the number of prime factors of
62

(i)

4
(ii)

1
(iii)

2
(iv)

3
(v)

0

Question 16

16.

Find the number of prime factors of
36

(i)

2
(ii)

3
(iii)

0
(iv)

4
(v)

1

Question 17

17.

Find the number of prime factors of
4000

(i)

3
(ii)

0
(iii)

4
(iv)

1
(v)

2

Question 18

18.

Find the HCF of
{38,8}

(i)

0
(ii)

3
(iii)

5
(iv)

2
(v)

1

Question 19

19.

Find the HCF of
{44,26,49,36}

(i)

2
(ii)

1
(iii)

3
(iv)

(-1)
(v)

0

Question 20

20.

Find the HCF of
{36,78}

(i)

8
(ii)

3
(iii)

5
(iv)

7
(v)

6

Question 21

21.

Find the HCF of
{192,624}

(i)

50
(ii)

49
(iii)

46
(iv)

48
(v)

47

Question 22

22.

Find the HCF of
{100,190,80}

(i)

10
(ii)

13
(iii)

7
(iv)

11
(v)

9

Question 23

23.

Find the LCM of
{16,15}

(i)

239
(ii)

243
(iii)

238
(iv)

241
(v)

240

Question 24

24.

Find the LCM of
{144,216}

(i)

431
(ii)

432
(iii)

434
(iv)

433
(v)

430

Question 25

25.

Find the LCM of
{20,100}

(i)

102
(ii)

97
(iii)

99
(iv)

100
(v)

101

Question 26

26.

Find the LCM of
{520,600,160}

(i)

31200
(ii)

31203
(iii)

31199
(iv)

31201
(v)

31197

Question 27

27.

Find the LCM of
{280,360,220,40}

(i)

27721
(ii)

27718
(iii)

27722
(iv)

27720
(v)

27719

Question 28

28.

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

(i)

672
(ii)

676
(iii)

675
(iv)

678
(v)

674

Assignment Key