EduSahara™ Worksheet

Question 1

1.

Find the prime factorization of
256

(i)

4 8
(ii)

2 9
(iii)

2 7
(iv)

2 6
(v)

2 8

Question 2

2.

Find the prime factorization of
640

(i)

2 8

✕

5
(ii)

(-1) 7

✕

5
(iii)

2 7

✕

7
(iv)

2 7

✕

4
(v)

2 7

✕

5

Question 3

3.

Find the prime factorization of
95

(i)

5

✕

19 2
(ii)

4

✕

19
(iii)

7

✕

19
(iv)

5

✕

17
(v)

5

✕

19

Question 4

4.

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

(i)

501
(ii)

505
(iii)

503
(iv)

504
(v)

507

Question 5

5.

Express
1873
10000
as a decimal correct to 4 decimal places

(i)

0.2873
(ii)

0.1873
(iii)

-0.0127
(iv)

1.873
(v)

0.0187

Question 6

6.

Convert the non-terminating recurring decimal
10.
2
to rational number

(i)

92
11
(ii)

92
7
(iii)

94
9
(iv)

92
9
(v)

10

Question 7

7.

Express
691
1000
as a decimal correct to 3 decimal places

(i)

0.491
(ii)

0.691
(iii)

0.791
(iv)

6.91
(v)

0.069

Question 8

8.

Which of the following fractions converts to a terminating decimal?

(i)

109
9
(ii)

193
18
(iii)

109
90
(iv)

109
54
(v)

3366
100

Question 9

9.

4.8 =

(i)

480
(ii)

12
25
(iii)

48
(iv)

24
5
(v)

6
125

Question 10

10.

Find the HCF of
{4,18}

(i)

2
(ii)

1
(iii)

0
(iv)

3
(v)

4

Question 11

11.

Find the LCM of
{152,32}

(i)

609
(ii)

611
(iii)

608
(iv)

605
(v)

607

Question 12

12.

Convert the fraction
173
27
to non-terminating recurring decimal

(i)

0.06
407
(ii)

640.
740
(iii)

6.
407
(iv)

64.
074
(v)

0.6
407

Question 13

13.

Which of the following fractions converts to a non-terminating recurring decimal?

(i)

149
9
(ii)

4480
80
(iii)

46
1
(iv)

1800
40
(v)

90
1

Question 14

14.

Find the number of prime factors of
5408

(i)

2
(ii)

4
(iii)

0
(iv)

1
(v)

3

Question 15

15.

Find the product of LCM and HCF of
{22,28,16}

(i)

2461
(ii)

2464
(iii)

2465
(iv)

2463
(v)

2466

Question 16

16.

Express
33
100
as a decimal correct to 2 decimal places

(i)

0.33
(ii)

0.03
(iii)

0.13
(iv)

0.43
(v)

3.3

Question 17

17.

7.639 =

(i)

7639
1000
(ii)

7639
100
(iii)

7639
100000
(iv)

7639
10000
(v)

7639
10

Question 18

18.

Find the product of LCM and HCF of
{4,9,18,10}

(i)

179
(ii)

180
(iii)

178
(iv)

181
(v)

182

Question 19

19.

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

(i)

55
(ii)

56
(iii)

54
(iv)

53
(v)

51

Question 20

20.

Find the HCF of
{24,60}

(i)

12
(ii)

10
(iii)

13
(iv)

11
(v)

14

Question 21

21.

The recurring part of the decimal
10.38095238095238...
is

(i)

38095231
(ii)

380952
(iii)

10.380952
(iv)

3809523380952
(v)

380952380952

Question 22

22.

Find the HCF of
{1320,540,450,840}

(i)

31
(ii)

28
(iii)

32
(iv)

30
(v)

29

Question 23

23.

Convert the fraction
1
3
to non-terminating recurring decimal

(i)

3.
3
(ii)

0.
0
(iii)

33.
3
(iv)

0.0
3
(v)

0.
3

Question 24

24.

Find the HCF of
{640,360}

(i)

37
(ii)

41
(iii)

39
(iv)

40
(v)

43

Question 25

25.

Find the prime factorization of
30

(i)

-1

✕

3

✕

5
(ii)

2

✕

3

✕

8
(iii)

1

✕

3

✕

5
(iv)

2

✕

3

✕

5
(v)

2

✕

3 2

✕

5

Assignment Key