EduSahara™ Worksheet

EduSahara™ Assignment

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

Chapter : Real Numbers

Grade : SSC Grade X

License : Non Commercial Use

Question 1

1.

Find the prime factorization of
12

(i)

2 2

✕

3
(ii)

2 3

✕

3
(iii)

(-1) 2

✕

3
(iv)

2 2

✕

6
(v)

2 2

✕

2

Question 2

2.

Find the prime factorization of
75

(i)

3 -1

✕

5 2
(ii)

5

✕

5 2
(iii)

3

✕

5 3
(iv)

3

✕

5 2
(v)

2

✕

5 2

Question 3

3.

Find the prime factorization of
1200

(i)

2 4

✕

3

✕

5 3
(ii)

2 4

✕

3

✕

5 2
(iii)

5 4

✕

3

✕

5 2
(iv)

2 2

✕

3

✕

5 2
(v)

2 3

✕

3

✕

5 2

Question 4

4.

Find the prime factorization of
1800

(i)

2 3

✕

3 2

✕

5 2
(ii)

2 3

✕

3 2

✕

7 2
(iii)

2 3

✕

3 2

✕

3 2
(iv)

2 4

✕

3 2

✕

5 2
(v)

2 2

✕

3 2

✕

5 2

Question 5

5.

Find the number of prime factors of
30

(i)

2
(ii)

3
(iii)

0
(iv)

1
(v)

4

Question 6

6.

Find the number of prime factors of
56

(i)

2
(ii)

0
(iii)

3
(iv)

4
(v)

1

Question 7

7.

Find the number of prime factors of
1144

(i)

2
(ii)

0
(iii)

3
(iv)

1
(v)

4

Question 8

8.

Find the number of prime factors of
9504

(i)

2
(ii)

4
(iii)

0
(iv)

1
(v)

3

Question 9

9.

Find the total number of factors of
27

(i)

1
(ii)

4
(iii)

7
(iv)

5
(v)

3

Question 10

10.

Find the total number of factors of
87

(i)

7
(ii)

4
(iii)

3
(iv)

5
(v)

1

Question 11

11.

Find the total number of factors of
660

(i)

22
(ii)

23
(iii)

26
(iv)

25
(v)

24

Question 12

12.

Find the total number of factors of
13552

(i)

30
(ii)

27
(iii)

33
(iv)

31
(v)

29

Question 13

13.

Find the HCF of
{12,15}

(i)

4
(ii)

3
(iii)

6
(iv)

1
(v)

2

Question 14

14.

Find the HCF of
{16,21}

(i)

1
(ii)

2
(iii)

3
(iv)

(-2)
(v)

0

Question 15

15.

Find the HCF of
{38,25,35}

(i)

4
(ii)

1
(iii)

(-1)
(iv)

0
(v)

2

Question 16

16.

Find the HCF of
{4,30,6,24}

(i)

1
(ii)

3
(iii)

2
(iv)

4
(v)

0

Question 17

17.

Find the HCF of
{280,400}

(i)

39
(ii)

43
(iii)

41
(iv)

38
(v)

40

Question 18

18.

Find the HCF of
{720,390}

(i)

31
(ii)

32
(iii)

30
(iv)

29
(v)

28

Question 19

19.

Find the HCF of
{80,840,960}

(i)

41
(ii)

39
(iii)

42
(iv)

40
(v)

37

Question 20

20.

Find the HCF of
{112,224,264,40}

(i)

5
(ii)

7
(iii)

8
(iv)

9
(v)

10

Question 21

21.

Find the LCM of
{6,4}

(i)

15
(ii)

10
(iii)

12
(iv)

13
(v)

11

Question 22

22.

Find the LCM of
{8,12}

(i)

22
(ii)

24
(iii)

23
(iv)

26
(v)

25

Question 23

23.

Find the LCM of
{16,4,14}

(i)

112
(ii)

111
(iii)

113
(iv)

114
(v)

109

Question 24

24.

Find the LCM of
{6,16,10,18}

(i)

719
(ii)

718
(iii)

723
(iv)

720
(v)

721

Question 25

25.

Find the LCM of
{168,216}

(i)

1510
(ii)

1512
(iii)

1514
(iv)

1511
(v)

1513

Question 26

26.

Find the LCM of
{800,320}

(i)

1600
(ii)

1598
(iii)

1602
(iv)

1599
(v)

1601

Question 27

27.

Find the LCM of
{540,120,840}

(i)

7560
(ii)

7563
(iii)

7561
(iv)

7559
(v)

7557

Question 28

28.

Find the LCM of
{20,50,200,120}

(i)

597
(ii)

599
(iii)

601
(iv)

603
(v)

600

Question 29

29.

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

(i)

33
(ii)

35
(iii)

36
(iv)

38
(v)

37

Question 30

30.

Find the product of LCM and HCF of
{9,26}

(i)

235
(ii)

236
(iii)

234
(iv)

231
(v)

233

Question 31

31.

Find the product of LCM and HCF of
{28,24,21}

(i)

168
(ii)

169
(iii)

167
(iv)

170
(v)

166

Question 32

32.

Find the product of LCM and HCF of
{26,4,10,24}

(i)

3117
(ii)

3119
(iii)

3121
(iv)

3123
(v)

3120

Assignment Key