EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Real Numbers
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Find the number of prime factors of
48
(i)
4
(ii)
3
(iii)
2
(iv)
0
(v)
1
Question
2
2.
5.10 =
(i)
51
100
(ii)
51
(iii)
51
1000
(iv)
510
(v)
51
10
Question
3
3.
Find the HCF of
{39,45,9}
(i)
0
(ii)
4
(iii)
5
(iv)
2
(v)
3
Question
4
4.
The recurring part of the decimal
28.
370
is
(i)
37032
(ii)
28.370
(iii)
370
(iv)
3703370
(v)
370370
Question
5
5.
Find the prime factorization of
960
(i)
4
6
✕
3
✕
5
(ii)
2
6
✕
3
✕
5
(iii)
2
6
✕
3
2
✕
5
(iv)
2
5
✕
3
✕
5
(v)
2
6
✕
3
✕
2
Question
6
6.
Find the HCF of
{45,30,44,9}
(i)
2
(ii)
1
(iii)
4
(iv)
0
(v)
(-1)
Question
7
7.
Find the LCM of
{228,120}
(i)
2280
(ii)
2281
(iii)
2283
(iv)
2279
(v)
2278
Question
8
8.
Find the product of LCM and HCF of
{4,12,14}
(i)
166
(ii)
168
(iii)
167
(iv)
169
(v)
171
Question
9
9.
Express
3
10
as a decimal correct to 1 decimal places
(i)
0.4
(ii)
0
(iii)
3
(iv)
0.1
(v)
0.3
Question
10
10.
Find the LCM of
{9,6}
(i)
17
(ii)
20
(iii)
15
(iv)
18
(v)
19
Question
11
11.
Find the LCM of
{15,10,9}
(i)
87
(ii)
89
(iii)
90
(iv)
93
(v)
91
Question
12
12.
12.99 =
(i)
1299
10000
(ii)
1299
100
(iii)
1299
(iv)
1299
10
(v)
1299
1000
Question
13
13.
Express
53
100
as a decimal correct to 2 decimal places
(i)
0.33
(ii)
5.3
(iii)
0.53
(iv)
0.05
(v)
0.63
Question
14
14.
Which of the following is an irrational number?
(i)
5
(ii)
2.5556
(iii)
5
7
(iv)
3
√
82
(v)
1
Question
15
15.
Find the LCM of
{12,4,18,6}
(i)
37
(ii)
35
(iii)
38
(iv)
33
(v)
36
Question
16
16.
Find the total number of factors of
2592
(i)
27
(ii)
31
(iii)
33
(iv)
30
(v)
29
Question
17
17.
Find the product of LCM and HCF of
{8,24}
(i)
194
(ii)
193
(iii)
191
(iv)
192
(v)
189
Question
18
18.
Find the HCF of
{60,300,705}
(i)
14
(ii)
16
(iii)
13
(iv)
15
(v)
18
Question
19
19.
Find the LCM of
{300,165,285,270}
(i)
564298
(ii)
564300
(iii)
564302
(iv)
564301
(v)
564299
Question
20
20.
Find the prime factorization of
35
(i)
5
✕
6
(ii)
5
✕
7
(iii)
5
✕
7
2
(iv)
5
✕
4
(v)
5
✕
10
Question
21
21.
Which of the following is a rational number?
(i)
3
√
29
(ii)
√
10
(iii)
√
76
(iv)
10
15
(v)
√
43
Question
22
22.
9.2 =
(i)
23
25
(ii)
46
5
(iii)
92
(iv)
920
(v)
23
250
Question
23
23.
Find the HCF of
{40,25}
(i)
6
(ii)
2
(iii)
7
(iv)
4
(v)
5
Question
24
24.
Find the HCF of
{525,285}
(i)
14
(ii)
12
(iii)
16
(iv)
15
(v)
18
Question
25
25.
Find the number of prime factors of
400
(i)
2
(ii)
1
(iii)
4
(iv)
0
(v)
3
Assignment Key
1) (iii)
2) (v)
3) (v)
4) (iii)
5) (ii)
6) (ii)
7) (i)
8) (ii)
9) (v)
10) (iv)
11) (iii)
12) (ii)
13) (iii)
14) (iv)
15) (v)
16) (iv)
17) (iv)
18) (iv)
19) (ii)
20) (ii)
21) (iv)
22) (ii)
23) (v)
24) (iv)
25) (i)
