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Number System

Total questions: 110

Worksheet time: 5hrs 46mins

Name
Class
Date
1.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
2.
Convert 65 to binary
a)
01100001
b)
00100001
c)
01000001
d)
00100101
3.
Convert 37 to binary
a)
00100101
b)
00100011
c)
00100111
d)
01000101
4.
Convert 00010001 to decimal
a)
17
b)
27
c)
37
d)
47
5.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
6.
Convert 11001100 to decimal
a)
224
b)
134
c)
104
d)
204
7.
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
8.
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
9.

What is the point of binary?

a)

It represents how computers interpret electrical signals

b)

Because we like to make you do extra math

c)

It is fun

d)

Because it describes star systems

10.

How is our number system different from the binary system?

a)

Our number system is base 5; the binary system is base 3

b)

Our number system is base 10; the binary system is base 2

c)

Our number system is base 10; the binary system is base 1

d)

Our number system is base 100; the binary system is base 2

11.
Your computer's code for the letter A is 01000001. Can you infer what the letter B would be?
a)
10010
b)
01000010
c)
01010110
d)
00000001
12.
Which of the following numbers is a power of 2?
a)
6
b)
16
c)
10
d)
20
13.

What is the main function of binary code?

a)

Turning on switches to off

b)

Allowing computers to represent and store data

c)

Providing a gateway into higher mathematics

d)

Allowing computers to interact with humans

14.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
15.
Convert 65 to binary
a)
01100001
b)
00100001
c)
01000001
d)
00100101
16.
Convert 37 to binary
a)
00100101
b)
00100011
c)
00100111
d)
01000101
17.
Convert 00010001 to decimal
a)
17
b)
27
c)
37
d)
47
18.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
19.
Convert 11001100 to decimal
a)
224
b)
134
c)
104
d)
204
20.
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
21.
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
22.

What is the point of binary?

a)

It represents how computers interpret electrical signals

b)

Because we like to make you do extra math

c)

It is fun

d)

Because it describes star systems

23.

How is our number system different from the binary system?

a)

Our number system is base 5; the binary system is base 3

b)

Our number system is base 10; the binary system is base 2

c)

Our number system is base 10; the binary system is base 1

d)

Our number system is base 100; the binary system is base 2

24.
Your computer's code for the letter A is 01000001. Can you infer what the letter B would be?
a)
10010
b)
01000010
c)
01010110
d)
00000001
25.
Which of the following numbers is a power of 2?
a)
6
b)
16
c)
10
d)
20
26.

What is the main function of binary code?

a)

Turning on switches to off

b)

Allowing computers to represent and store data

c)

Providing a gateway into higher mathematics

d)

Allowing computers to interact with humans

27.

How do you represent information using electricity

a)

On or Off

b)

Yes or No

c)

True or False

d)

All the options

28.

A Bit is

a)

Largest piece of information a computer can store

b)

Smallest piece of information a computer can store

c)

Medium piece of information a computer can store

d)

None of the options

29.

More wires means

a)

Less information you can represent

b)

Nothing

c)

More information you can represent

30.

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

31.

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

32.

Each position in the decimal system to 10 greater (1s, 10, 100s, 1000s), in the Binary system each position is

a)

Two times great (1s, 2s, 4s, 8s, 16s...)

b)

Five times great (1s, 5s, 10s, 15s...)

c)

There is no binary number system

d)

All the options

33.

Things that can be represented with numbers

a)

Text/letters

b)

Images/Pixels

c)

Sounds/Waves

d)

All the options

34.

Number of planets in binary

a)

1001

b)

0111

c)

1000

d)

1010

35.
00011100
a)
28
b)
27
c)
26
d)
25
36.
00100010
a)
34
b)
33
c)
32
d)
31
37.
01010110
a)
86
b)
85
c)
84
d)
83
38.

Convert 9 to binary.

a)

1010

b)

1001

c)

11

39.
Convert 37 to binary
a)
00100101
b)
00100011
c)
00100111
d)
01000101
40.

Cristiano Ronaldo's age in binary is

a)

0001001

b)

1000110

c)

100110

d)

1000000

41.

Share result of 35 + 76 in binary

a)

111

b)

1101111

c)

0011100

d)

1111011

42.

250 in binary

a)

10000100

b)

11111010

c)

10101111

d)

10010000

43.

Binary number "10010010" in decimal is

a)

252

b)

156

c)

256

d)

146

44.

Convert Binary into Denary:

0110 1100

a)

108

b)

107

c)

106

d)

109

45.

Convert Denary into Binary:

254

a)

1111 1100

b)

1110 1111

c)

1010 0101

d)

1111 1110

46.

Hexadecimal number system is a base (a)   system

47.

Convert Binary into Hexadecimal:

1011 1110 0001

a)

CE2

b)

6ED

c)

BE1

d)

9G2

48.

Convert Hexadecimal into Binary:

45A

a)

0100 0101 1010

b)

1011 1111 0000

c)

1001 0011 0110

d)

0100 0101 1011

49.

Convert Hexadecimal into Denary:

45A

a)

1234

b)

4321

c)

1114

d)

6969

50.

Convert Denary into Hexadecimal:

2004

a)

DE4

b)

7D4

c)

BE4

d)

65D

51.

A MAC address is usually made up of how many bits?

a)

48

b)

32

c)

64

d)

128

52.

2 types of IP addresses?

a)

IPv4 and IPv6

b)

IPv4 and IPv8

c)

IPv3 and IPv6

d)

IPv9 and IPv10

53.

Add the 2 Binaries:

0010 0111

and

0100 1010

a)

1001 0101

b)

0111 0001

c)

1011 1111

d)

0001 1000

54.

Shift this Binary 3 places left:

0001 0101

a)

1010 1000

b)

1000 1010

c)

0101 0100

d)

0000 1111

55.

Convert negative binary numbers in two's compliment format into Denary:

1001 0011

a)

-246

b)

-109

c)

-69

d)

-108

56.

Convert negative denary into Binary in two's compliment format:

-67

a)

1011 1101

b)

1011 1111

c)

1010 1111

d)

1100 0011

57.

Sound waves are analogue data. Computers cannot work with analogue data. So what is need to be done in order for computers to store sound waves.

a)

Sound waves need to be sampled.

Can do this by ADC

(Analogue to Digital Converter)

b)

Sound waves need to be recorded.

c)

Sound waves need to change frequency. By SWFC

(Sound wave to frequency converter)

d)

Sound waves cannot be stored in computer from external sounds.

58.

What is meant by sampling resolution (bit depth)?

a)

The number of bits per sample.

b)

The number of bytes per sample.

c)

The number of pixels per sample.

d)

The number of data per sample.

59.

Bitmap images are made up of (a)  

60.

The number of bits used to represent each color is called the (a)  

61.

What is an Image Resolution?

a)

Number of pixels in an image.

b)

Number of bits in an image.

c)

Number of bytes in an image.

d)

Number of data in an image.

62.

Main drawback of high resolution images?

a)

Increase in file size

b)

Increase in pixels

c)

The quality of Image.

d)

No drawbacks.

63.

A (a)   is the basic unit of all computing memory storage terms.

64.

File size of an image is calculated as:

a)

Image resolution (in pixels) x colour depth (in bits)

b)

Sample rate x sample resolution x length of sample

c)

Image resolution + colour depth

d)

Image resolution - colour depth

65.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
66.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
67.
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
68.

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

69.
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
70.
What is the denary number system?
a)
It counts the number of dens
b)
Our usual base 10 number system
c)
A special number system for computers
d)
Den Ary's number system
71.
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
72.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
73.
Computers can only understand 0s and 1s.
a)
True
b)
False
74.
Binary is made up of which numbers 
a)
3 and 4.
b)
2 and 3.
c)
1 and 2.
d)
0 and 1.
75.
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.
76.
A group of 8 bits is known as a gigabyte.
a)
True
b)
False
77.
8 bytes = 1 bit
a)
TRUE
b)
FALSE
78.
How would you write the number 4 in binary code?
a)
0100
b)
0000
c)
0001
d)
0010
79.

Convert (38.625) 10 to binary equivalent.

a)

(1010.11)2

b)

(100110.101)2

c)

(1011001.101)2

d)

(101011.1100)2

80.

Convert (25.75)10 to binary equivalent.

a)

(101.011)2

b)

(1011.0110)2

c)

(11001.11)2

d)

(1010.0110)2

81.

What kind of 'base' system is binary known as?

a)

Base 12

b)

Base 8

c)

Base 2

d)

Base 10

82.

How do Binary values change with each addtional number?

a)

They double

b)

They go up in 10's

83.
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
84.
Which of these is the correct sequence for the place values for binary numbers?
a)
1, 2, 4, 8, 16, 32, 64, 128
b)
1, 2, 4, 6, 8, 10, 12, 14, 16
c)
1, 2, 3, 4, 5, 6, 7, 8
d)
0, 1
85.
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
86.
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
87.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
88.
Binary is made up of which numbers 
a)
3 and 4.
b)
2 and 3.
c)
1 and 2.
d)
0 and 1.
89.
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.
90.
A group of 8 bits is known as a gigabyte.
a)
True
b)
False
91.
8 bytes = 1 bit
a)
TRUE
b)
FALSE
92.
How would you write the number 4 in binary code?
a)
0100
b)
0000
c)
0001
d)
0010
93.

How do you write the number 10 in binary?

a)

1010

b)

11

c)

1001

d)

1000

94.

Which represents the number 0 in binary?

a)

0

b)

1

c)

10

d)

100

95.

Which represents the number 20 in binary?

a)

10100

b)

1010

c)

101

d)

101000

96.

This system of ten digits is called the decimal number system while the number system that uses only two digits is called _____.

a)

the hexadecimal number system

b)

the octal number system

c)

the binary number system

d)

the duodecimal number system

97.

Which of the following is the correct binary representation of the number 2?

a)

110

b)

101

c)

10

d)

11

98.

The only two digits used in the binary number system are _______.

a)

one and two

b)

zero and one

c)

zero and two

d)

two and three

99.

What is binary?

a)

A sequence of 1's and 0's

b)

The way a computer speaks

c)

Useless code that's no longer used

100.

What kind of 'base' system is binary known as?

a)

Base 12

b)

Base 8

c)

Base 2

d)

Base 10

101.

WHICH NUMBER SYSTEM IS USED BY COMPUTER FOR INTERNAL CALCULATION

a)

DECIMAL

b)

BINARY

102.

NUMBER SYSTEM WHOSE BASE IS 8

a)

DECIMAL

b)

BINARY

c)

OCTAL

103.
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
104.

How many values can a binary digit store?

a)

A binary digit can store two values at a time.

b)

A binary digit can store ten values at a time.

c)

A binary digit can store one of two values (0 or 1).

d)

A binary digit can store one of ten values (0-9).

105.

Which of these values can be stored in a single bit?

a)

4

b)

[1, 0]

c)

1

d)

10

106.

The Apple iPhone includes a settings menu where you can toggle various accessibility options on or off. What is the minimum number of bits that can represent those 2 options?

(a)  

107.

When writing binary data, we often put a space between each byte to make it easier for humans to read. Consider this binary data:

00100110010100001010100100011010

Which choice puts a space after each byte?

a)

00 10 01 10 01 01 00 00 10 10 10 01 00 01 10 10

b)

00100110 01010000 10101001 00011010

c)

0010 0110 0101 0000 1010 1001 0001 1010

d)

001001100101000 0101010010001010

108.

Which of the following is a single byte of digital information?

a)

0

b)

10101101

c)

101011010111

d)

1010001010

109.

How many bits are in 2 bytes?

a)

2 bits

b)

8 bits

c)

16 bits

d)

32 bits

110.

Consider this sequence of bits:

101111111101000111111101

How many bytes long is that sequence of bits?

a)

3

b)

12

c)

4

d)

24

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