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
{9,18}

(i)

10
(ii)

9
(iii)

8
(iv)

6
(v)

11

Question 2

2.

Find the HCF of
{24,30,26}

(i)

5
(ii)

1
(iii)

3
(iv)

2
(v)

0

Question 3

3.

Find the HCF of
{300,24,60,282}

(i)

6
(ii)

8
(iii)

4
(iv)

7
(v)

5

Question 4

4.

Find the LCM of
{9,6}

(i)

20
(ii)

17
(iii)

16
(iv)

19
(v)

18

Question 5

5.

Find the LCM of
{10,15,16}

(i)

240
(ii)

239
(iii)

241
(iv)

237
(v)

242

Question 6

6.

Find the LCM of
{16,18,8,9}

(i)

144
(ii)

145
(iii)

143
(iv)

142
(v)

146

Question 7

7.

Find the product of LCM and HCF of
{9,6}

(i)

55
(ii)

54
(iii)

56
(iv)

52
(v)

53

Question 8

8.

Find the product of LCM and HCF of
{14,9,22}

(i)

1384
(ii)

1387
(iii)

1386
(iv)

1389
(v)

1385

Question 9

9.

Find the product of LCM and HCF of
{14,6,10,24}

(i)

1683
(ii)

1680
(iii)

1681
(iv)

1678
(v)

1679

Question 10

10.

Find the prime factorization of
30

(i)

1

✕

3

✕

5
(ii)

2

✕

3 2

✕

5
(iii)

-1

✕

3

✕

5
(iv)

4

✕

3

✕

5
(v)

2

✕

3

✕

5

Question 11

11.

Find the prime factorization of
60

(i)

2 3

✕

3

✕

5
(ii)

2

✕

3

✕

5
(iii)

0

✕

3

✕

5
(iv)

2 2

✕

3

✕

8
(v)

2 2

✕

3

✕

5

Question 12

12.

Find the prime factorization of
400

(i)

4 4

✕

5 2
(ii)

2 4

✕

5 3
(iii)

2 3

✕

5 2
(iv)

2 4

✕

5 2
(v)

2 4

✕

3 2

Question 13

13.

Find the prime factorization of
4704

(i)

2 4

✕

3

✕

7 2
(ii)

2 5

✕

3 2

✕

7 2
(iii)

2 5

✕

3

✕

7 2
(iv)

4 5

✕

3

✕

7 2
(v)

(-1) 5

✕

3

✕

7 2

Question 14

14.

Find the number of prime factors of
46

(i)

0
(ii)

4
(iii)

3
(iv)

2
(v)

1

Question 15

15.

Find the number of prime factors of
81

(i)

4
(ii)

0
(iii)

1
(iv)

3
(v)

2

Question 16

16.

Find the number of prime factors of
840

(i)

4
(ii)

3
(iii)

6
(iv)

5
(v)

1

Question 17

17.

Find the number of prime factors of
1080

(i)

0
(ii)

2
(iii)

4
(iv)

3
(v)

1

Question 18

18.

Find the HCF of
{40,16}

(i)

7
(ii)

8
(iii)

5
(iv)

9
(v)

10

Question 19

19.

Find the HCF of
{38,12,24,9}

(i)

3
(ii)

2
(iii)

0
(iv)

1
(v)

(-2)

Question 20

20.

Find the HCF of
{56,24}

(i)

10
(ii)

8
(iii)

6
(iv)

7
(v)

9

Question 21

21.

Find the HCF of
{405,735}

(i)

12
(ii)

17
(iii)

16
(iv)

14
(v)

15

Question 22

22.

Find the HCF of
{330,310,140}

(i)

11
(ii)

12
(iii)

10
(iv)

8
(v)

9

Question 23

23.

Find the LCM of
{10,15}

(i)

29
(ii)

32
(iii)

31
(iv)

30
(v)

28

Question 24

24.

Find the LCM of
{240,600}

(i)

1202
(ii)

1200
(iii)

1198
(iv)

1201
(v)

1199

Question 25

25.

Find the LCM of
{40,200}

(i)

197
(ii)

201
(iii)

199
(iv)

202
(v)

200

Question 26

26.

Find the LCM of
{400,120,600}

(i)

1200
(ii)

1203
(iii)

1201
(iv)

1197
(v)

1199

Question 27

27.

Find the LCM of
{280,360,160,220}

(i)

110879
(ii)

110877
(iii)

110880
(iv)

110881
(v)

110883

Question 28

28.

Find the product of LCM and HCF of
{14,24}

(i)

334
(ii)

336
(iii)

337
(iv)

339
(v)

335

Assignment Key