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Number system

Total questions: 78

Worksheet time: 1hrs 15mins

Name
Class
Date
1.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
2.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
3.
What are the only two numbers you can use in binary?
a)
0 and 1
b)
1 and 2
c)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
d)
1, 2, 4, 8, 16
4.

Which of these are the correct place values for binary?

a)

128,64,32,16,8,4,2,1

b)

128, 68,34,12,6,4,2,1

c)

1,0

d)

0,1

5.
If a binary number ends with a 1, it must be...
a)
An odd number
b)
An even number
c)
A prime number
d)
The number 12
6.
What is the point of binary?
a)
It represents how computers interpret electrical signals
b)
Because we like to make you do extra maths ;-D
c)
For the lulz
d)
Because it describes star systems
7.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
8.
Computers can only understand 0s and 1s.
a)
True
b)
False
9.
Binary is made up of which numbers 
a)
3 and 4.
b)
2 and 3.
c)
1 and 2.
d)
0 and 1.
10.
A bit is 
a)
a numerical label assigned to each device.
b)
the smallest unit of data in a computer.
c)
a keyboarding term for typing.
d)
is a numeral system made up of 16 symbols.
11.
A group of 8 bits is known as a gigabyte.
a)
True
b)
False
12.
8 bytes = 1 bit
a)
TRUE
b)
FALSE
13.
How would you write the number 4 in binary code?
a)
0100
b)
0000
c)
0001
d)
0010
14.
What is the answer to 1010 + 0101?
a)
1011
b)
1001
c)
1111
d)
0111
15.
What is the answer to 0101 + 0101?
a)
1111
b)
1100
c)
1110
d)
1010
16.
Convert 65 to binary
a)
01100001
b)
00100001
c)
01000001
d)
00100101
17.
Convert 11001100 to decimal
a)
224
b)
134
c)
104
d)
204
18.

Decimal number system has

a)

Eight digits (0 to 7)

b)

Ten digits (0 to 9)

c)

Sixteen digits (0 to F)

d)

There is no such thing as a decimal number system

19.

Binary number system has

a)

Four digits (0, 1, 2, 3)

b)

Two digits (0 and 1)

c)

Dozen digits (0 to eleven)

d)

There is no such thing as a binary number system

20.

How do you represent information using electricity

a)

On or Off

b)

Yes or No

c)

True or False

d)

All the options

21.
convert binary to decimal 10011011.
a)
155
b)
156
c)
125
d)
145
22.
convert binary to decimal 100101
a)
37
b)
36
c)
34
23.

01 to decimal

a)

0

b)

1

c)

10

d)

010

24.

1101 to decimal

a)

15

b)

11

c)

12

d)

13

25.

1111 to decimal

a)

15

b)

11

c)

12

d)

13

26.

10111 to decimal

a)

23

b)

27

c)

30

d)

31

27.

11101 to decimal

a)

23

b)

27

c)

29

d)

30

28.

What suffix would you use to show Binary?

a)

1

b)

2

c)

10

d)

16

29.

What suffix would you use to show Decimal?

a)

1

b)

2

c)

10

d)

16

30.

Convert 10010011 from Binary to Decimal?

a)

127

b)

147

c)

187

d)

167

31.

Convert 01000010 from Binary to Decimal?

a)

35

b)

66

c)

78

d)

57

32.

Convert 001100010 from Binary to Decimal?

a)

84

b)

98

c)

102

d)

79

33.

Convert 11100011 from Binary to Decimal?

a)

198

b)

227

c)

209

d)

235

34.

Convert 00101001 from Binary to Decimal?

a)

28

b)

41

c)

56

d)

35

35.

Convert 71 from Decimal to Binary?

a)

0100 0111

b)

0011 0110

c)

0101 1110

d)

0010 1000

36.

Convert 189 from Decimal to Binary?

a)

1011 1101

b)

1110 0101

c)

1101 1101

d)

0010 1001

37.

Convert 255 from Decimal to Binary?

a)

1111 1111

b)

1110 1111

c)

1111 0000

d)

0110 1110

38.

Convert 201 from Decimal to Binary?

a)

1100 1001

b)

0100 0111

c)

1001 1001

d)

0111 1101

39.

Convert 201 from Decimal to Binary?

a)

0001 0001

b)

0000 1111

c)

0010 0110

d)

0001 1011

40.

1101 to decimal

a)

15

b)

11

c)

12

d)

13

41.

1011 to decimal

a)

15

b)

11

c)

12

d)

13

42.

1100 to decimal

a)

15

b)

11

c)

12

d)

13

43.

11011 to decimal

a)

23

b)

27

c)

30

d)

31

44.

11110 to decimal

a)

23

b)

27

c)

29

d)

30

45.

16 to binary

a)

10000

b)

1111

c)

1000

d)

111

46.

15 to binary

a)

10000

b)

1111

c)

1000

d)

111

47.

8 to binary

a)

10000

b)

1111

c)

1000

d)

111

48.

7 to binary

a)

10000

b)

1111

c)

1000

d)

111

49.

28 to binary

a)

11100

b)

11001

c)

10011

d)

00111

50.

25 to binary

a)

11100

b)

11001

c)

10011

d)

00111

51.

19 to binary

a)

11100

b)

11001

c)

10011

d)

00111

52.

7 to binary

a)

11100

b)

11001

c)

10011

d)

00111

53.

64 to binary

a)

1000 0000

b)

0100 0000

c)

0010 0000

d)

0001 0000

54.

128 to binary

a)

1000 0000

b)

0100 0000

c)

0010 0000

d)

0001 0000

55.

16 to binary

a)

1000 0000

b)

0100 0000

c)

0010 0000

d)

0001 0000

56.

Convert 255 from Decimal to Binary?

a)

1111 1111

b)

1110 1111

c)

1111 0000

d)

0110 1110

57.

Write the binary number as a decimal number.


10012

a)

9

b)

15

c)

6

d)

3

58.

Write the binary number as a decimal number.


1000002

a)

23

b)

32

c)

100,000

d)

264

59.

Write the binary number as a decimal number.


1000002

a)

23

b)

32

c)

100,000

d)

264

60.

Write the binary number as a decimal number.


11001011012

a)

318

b)

416

c)

813

d)

264

61.

Write the binary number as a decimal number.


1000010002

a)

318

b)

416

c)

813

d)

264

62.

Write the binary number as a decimal number.


101010012

a)

169

b)

179

c)

315

d)

333

63.

Write the binary number as a decimal number.


10100001002

a)

744

b)

644

c)

544

d)

444

64.

Write the binary number as a decimal number.


10110101112

a)

527

b)

327

c)

727

d)

277

65.

Write the binary number as a decimal number.


10101011112

a)

577

b)

387

c)

487

d)

687

66.

Write the binary number as a decimal number.


11011111101002

a)

7156

b)

6156

c)

5456

d)

7756

67.

Write the binary number as a decimal number.


1101101011112

a)

7156

b)

3503

c)

2503

d)

4503

68.

Write the binary number as a decimal number.


1101101011112

a)

7156

b)

3503

c)

2503

d)

4503

69.

Convert the given decimal number to its binary equivalent.


3610

a)

1000002

b)

1011002

c)

1001002

d)

1001112

70.

Convert the given decimal number to its binary equivalent.


3210

a)

1000002

b)

1011002

c)

1001002

d)

1001112

71.

Convert the given decimal number to its binary equivalent.


4410

a)

1000002

b)

1011002

c)

1001002

d)

1001112

72.

Convert the given decimal number to its binary equivalent.


3910

a)

1000002

b)

1011002

c)

1001002

d)

1001112

73.

Convert the given decimal number to its binary equivalent.


5510

a)

1101112

b)

1100112

c)

1101012

d)

1101002

74.

Convert the given decimal number to its binary equivalent.


5110

a)

1101112

b)

1100112

c)

1101012

d)

1101002

75.

Convert the given decimal number to its binary equivalent.


5310

a)

1101112

b)

1100112

c)

1101012

d)

1101002

76.

Convert the given decimal number to its binary equivalent.


5210

a)

1101112

b)

1100112

c)

1101012

d)

1101002

77.

Convert the given decimal number to its binary equivalent.


4710

a)

1011112

b)

1110012

c)

1101012

d)

1101002

78.

Convert the given decimal number to its binary equivalent.


5710

a)

1011112

b)

1110012

c)

1101012

d)

1101002

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