EduSahara™ Worksheet

EduSahara™ Assignment

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

Chapter : Real Numbers

Grade : CBSE Grade X

License : Non Commercial Use

Question 1

1.

Find the prime factorization of
12

(i)

2

✕

3
(ii)

(-1) 2

✕

3
(iii)

2 3

✕

3
(iv)

2 2

✕

3
(v)

4 2

✕

3

Question 2

2.

Find the prime factorization of
58

(i)

1

✕

29
(ii)

2

✕

32
(iii)

2

✕

29 2
(iv)

2

✕

29
(v)

2

✕

26

Question 3

3.

Find the prime factorization of
360

(i)

2 3

✕

3 2

✕

5
(ii)

2 3

✕

3 2

✕

8
(iii)

2 3

✕

3 2

✕

4
(iv)

2 3

✕

1

✕

5
(v)

2 4

✕

3 2

✕

5

Question 4

4.

Find the prime factorization of
12936

(i)

2 3

✕

3

✕

4 2

✕

11
(ii)

2 3

✕

2

✕

7 2

✕

11
(iii)

4 3

✕

3

✕

7 2

✕

11
(iv)

2 3

✕

3

✕

7 2

✕

11
(v)

2 4

✕

3

✕

7 2

✕

11

Question 5

5.

Find the number of prime factors of
46

(i)

3
(ii)

2
(iii)

0
(iv)

1
(v)

4

Question 6

6.

Find the number of prime factors of
88

(i)

3
(ii)

0
(iii)

1
(iv)

2
(v)

4

Question 7

7.

Find the number of prime factors of
140

(i)

4
(ii)

0
(iii)

1
(iv)

3
(v)

2

Question 8

8.

Find the number of prime factors of
3276

(i)

5
(ii)

7
(iii)

2
(iv)

4
(v)

3

Question 9

9.

Find the total number of factors of
26

(i)

6
(ii)

3
(iii)

2
(iv)

5
(v)

4

Question 10

10.

Find the total number of factors of
96

(i)

9
(ii)

12
(iii)

13
(iv)

14
(v)

11

Question 11

11.

Find the total number of factors of
840

(i)

32
(ii)

29
(iii)

31
(iv)

35
(v)

33

Question 12

12.

Find the total number of factors of
2464

(i)

22
(ii)

23
(iii)

27
(iv)

25
(v)

24

Question 13

13.

Find the HCF of
{18,6}

(i)

5
(ii)

3
(iii)

6
(iv)

7
(v)

8

Question 14

14.

Find the HCF of
{46,9}

(i)

4
(ii)

(-2)
(iii)

1
(iv)

2
(v)

0

Question 15

15.

Find the HCF of
{39,32,44}

(i)

0
(ii)

2
(iii)

3
(iv)

1
(v)

(-2)

Question 16

16.

Find the HCF of
{14,36,26,45}

(i)

1
(ii)

2
(iii)

0
(iv)

4
(v)

(-1)

Question 17

17.

Find the HCF of
{156,120}

(i)

14
(ii)

11
(iii)

10
(iv)

12
(v)

13

Question 18

18.

Find the HCF of
{480,48}

(i)

48
(ii)

45
(iii)

51
(iv)

49
(v)

47

Question 19

19.

Find the HCF of
{96,60,168}

(i)

13
(ii)

11
(iii)

10
(iv)

14
(v)

12

Question 20

20.

Find the HCF of
{456,312,120,288}

(i)

26
(ii)

24
(iii)

23
(iv)

25
(v)

21

Question 21

21.

Find the LCM of
{6,4}

(i)

14
(ii)

12
(iii)

10
(iv)

13
(v)

11

Question 22

22.

Find the LCM of
{12,9}

(i)

34
(ii)

35
(iii)

39
(iv)

37
(v)

36

Question 23

23.

Find the LCM of
{10,6,8}

(i)

122
(ii)

120
(iii)

121
(iv)

118
(v)

119

Question 24

24.

Find the LCM of
{10,15,18,4}

(i)

177
(ii)

180
(iii)

183
(iv)

179
(v)

181

Question 25

25.

Find the LCM of
{64,56}

(i)

449
(ii)

451
(iii)

445
(iv)

448
(v)

447

Question 26

26.

Find the LCM of
{420,90}

(i)

1259
(ii)

1260
(iii)

1258
(iv)

1262
(v)

1261

Question 27

27.

Find the LCM of
{72,40,56}

(i)

2521
(ii)

2518
(iii)

2520
(iv)

2519
(v)

2523

Question 28

28.

Find the LCM of
{45,270,120,165}

(i)

11878
(ii)

11881
(iii)

11880
(iv)

11879
(v)

11882

Question 29

29.

Find the product of LCM and HCF of
{6,8}

(i)

48
(ii)

49
(iii)

50
(iv)

46
(v)

47

Question 30

30.

Find the product of LCM and HCF of
{15,24}

(i)

363
(ii)

361
(iii)

359
(iv)

357
(v)

360

Question 31

31.

Find the product of LCM and HCF of
{4,10,8}

(i)

78
(ii)

79
(iii)

83
(iv)

81
(v)

80

Question 32

32.

Find the product of LCM and HCF of
{8,15,16,9}

(i)

721
(ii)

720
(iii)

717
(iv)

723
(v)

719

Assignment Key