EduSahara™ Worksheet

EduSahara™ Worksheet

Name : Chapter Based Worksheet

Chapter : Real Numbers

Grade : CBSE Grade X

License : Non Commercial Use

Question 1

1.

Convert the fraction
22
9
to non-terminating recurring decimal

(i)

0.02
4
(ii)

0.2
4
(iii)

2.
4
(iv)

244.
4
(v)

24.
4

Question 2

2.

Express
4069
10000
as a decimal correct to 4 decimal places

(i)

0.2069
(ii)

0.0407
(iii)

0.5069
(iv)

4.069
(v)

0.4069

Question 3

3.

Find the LCM of
{15,18,8}

(i)

360
(ii)

358
(iii)

359
(iv)

361
(v)

363

Question 4

4.

Find the total number of factors of
10400

(i)

38
(ii)

37
(iii)

33
(iv)

36
(v)

35

Question 5

5.

7.139 =

(i)

7139
1000
(ii)

7139
100000
(iii)

7139
10000
(iv)

7139
100
(v)

7139
10

Question 6

6.

The recurring part of the decimal
12.2
7
is

(i)

771
(ii)

77
(iii)

7
(iv)

727
(v)

12.27

Question 7

7.

Find the HCF of
{640,600,1160,440}

(i)

40
(ii)

39
(iii)

38
(iv)

43
(v)

41

Question 8

8.

Find the number of prime factors of
189

(i)

0
(ii)

1
(iii)

3
(iv)

4
(v)

2

Question 9

9.

Find the product of LCM and HCF of
{14,26}

(i)

366
(ii)

364
(iii)

363
(iv)

361
(v)

365

Question 10

10.

Find the LCM of
{8,4}

(i)

7
(ii)

6
(iii)

8
(iv)

11
(v)

9

Question 11

11.

Which of the following is an irrational number?

(i)

5
(ii)

1
(iii)

19
23
(iv)

0.3333
(v)

√

57

Question 12

12.

Find the HCF of
{320,1640,1320}

(i)

40
(ii)

37
(iii)

41
(iv)

39
(v)

42

Question 13

13.

Convert the non-terminating recurring decimal
7.
4
to rational number

(i)

67
11
(ii)

67
7
(iii)

65
9
(iv)

23
3
(v)

67
9

Question 14

14.

Find the number of prime factors of
15

(i)

3
(ii)

0
(iii)

1
(iv)

4
(v)

2

Question 15

15.

Find the prime factorization of
7040

(i)

2 7

✕

5

✕

11
(ii)

2 7

✕

7

✕

11
(iii)

2 7

✕

5

✕

11 2
(iv)

2 7

✕

5

✕

10
(v)

2 7

✕

5

✕

8

Question 16

16.

Find the number of prime factors of
68

(i)

0
(ii)

1
(iii)

3
(iv)

2
(v)

4

Question 17

17.

Convert the non-terminating recurring decimal
17.55555555555555...

to rational number

(i)

160
9
(ii)

158
9
(iii)

52
3
(iv)

158
11
(v)

158
7

Question 18

18.

Find the LCM of
{40,340,240}

(i)

4081
(ii)

4077
(iii)

4080
(iv)

4082
(v)

4079

Question 19

19.

Find the HCF of
{216,282}

(i)

6
(ii)

5
(iii)

7
(iv)

4
(v)

8

Question 20

20.

Find the total number of factors of
441

(i)

10
(ii)

9
(iii)

6
(iv)

8
(v)

12

Question 21

21.

Find the HCF of
{156,168}

(i)

11
(ii)

14
(iii)

10
(iv)

13
(v)

12

Question 22

22.

The recurring part of the decimal
20.40740740740740...
is

(i)

20.407
(ii)

407407
(iii)

4074407
(iv)

40742
(v)

407

Question 23

23.

Which of the following is a rational number?

(i)

3
√

58
(ii)

√

10
(iii)

√

30
(iv)

5
6
(v)

√

95

Question 24

24.

Find the LCM of
{4,15,16,18}

(i)

722
(ii)

721
(iii)

720
(iv)

719
(v)

718

Question 25

25.

19.87 =

(i)

1987
(ii)

1987
100
(iii)

1987
1000
(iv)

1987
10000
(v)

1987
10

Assignment Key