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Revision Year 12 Data Representation Upto Binary Multiplication

Total questions: 81

Worksheet time: 46mins

Name
Class
Date
1.
Part 1: What is the answer to 100 + 001?
a)
110
b)
101
c)
010
d)
011
2.
What is the answer to 010 + 010?
a)
110
b)
010
c)
100
d)
011
3.
What is the answer to 1010 + 0101?
a)
1011
b)
1001
c)
1111
d)
0111
4.
What is the answer to 0110 + 0101?
a)
1011
b)
1101
c)
1110
d)
1111
5.
What is the answer to 0101 + 0101?
a)
1111
b)
1100
c)
1110
d)
1010
6.
Part II
a)
11001000
b)
11000110
c)
11000111
7.
a)
01111011
b)
01101111
c)
01111101
d)
01101101
8.
a)
10010000
b)
10001000
c)
10000100
d)
10100000
9.
a)
01011010
b)
10011010
c)
10010101
d)
10100010
10.
a)
10100100
b)
10010100
c)
11000100
d)
01011110
11.

Which of these are binary digits?

a)

0

b)

1

c)

2

d)

3

12.

Which of these are hexadecimal digits?

a)

F

b)

G

c)

6

d)

0

e)

H

13.

How many different values can be represented using 8 bits?

a)

128

b)

255

c)

256

d)

999

14.

What is the largest integer that can be represented using 7 bits?

a)

127

b)

128

c)

125

d)

999

15.

What is the binary equivalent of the hexadecimal digit E?

a)

1110

b)

1111

c)

0110

d)

0111

16.

Computers store all data using...

a)

Binary

b)

Hexadecimal

c)

Decimal

d)

Octal

17.

Hexadecimal is used because...

a)

It takes up less space

b)

It is easier for computers to process

c)

It is easier for people to read

d)

It is quicker to write data in

18.

What is the decimal equivalent of the binary number 00100111?

a)

39

b)

57

c)

228

d)

7

19.

What is the decimal equivalent of the hexadecimal number 4B?

a)

75

b)

180

c)

31

d)

255

20.

What is the binary equivalent of the decimal number 101?

a)

01100101

b)

01100011

c)

11110101

d)

00001101

21.

What is the largest 2-digit hexadecimal value?

a)

FF

b)

99

c)

9F

d)

F9

22.

What is the decimal equivalent of the hexadecimal digit B?

a)

10

b)

11

c)

12

d)

13

23.
Which of the following is the binary product 1001 × 111?
a)
110111
b)
111111
c)
111011
d)
111110
24.
Which of the following is the binary product 1101 × 1011?
a)
10101111
b)
10001111
c)
10101011
d)
10111011
25.

101011(2)x1001(2)101011(2)x1001(2)

a)

0110000011

b)

011000011

c)

0110001011

d)

010000011

26.

What is 0101 + 0011 in decimal value?

(a)  

27.

What is 1001 x 11?

a)

27

b)

28

c)

29

d)

30

28.

What is 11001100 + 01011100 in decimal?

(a)  

29.

The following binary number is using two’s complement.

10011010

What decimal number does this represent?

(a)  

30.

Convert the following binary number into its negative equivalent.

1101

a)

11101

b)

0010

c)

10010

d)

10011

31.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
32.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
33.
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
34.

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

35.
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
36.
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
37.
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
38.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
39.
Computers can only understand 0s and 1s.
a)
True
b)
False
40.
Binary is made up of which numbers 
a)
3 and 4.
b)
2 and 3.
c)
1 and 2.
d)
0 and 1.
41.
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.
42.
A group of 8 bits is known as a gigabyte.
a)
True
b)
False
43.
8 bytes = 1 bit
a)
TRUE
b)
FALSE
44.
How would you write the number 4 in binary code?
a)
0100
b)
0000
c)
0001
d)
0010
45.

Which of these are hexadecimal digits?

a)

F

b)

G

c)

6

d)

0

e)

H

46.

How many different values can be represented using 8 bits?

a)

128

b)

255

c)

256

d)

999

47.

Hexadecimal is used because...

a)

It takes up less space

b)

It is easier for computers to process

c)

It is easier for people to read

d)

It is quicker to write data in

48.

What is the decimal equivalent of the binary number 00100111?

a)

39

b)

57

c)

228

d)

7

49.

What is the decimal equivalent of the hexadecimal number 4B?

a)

75

b)

180

c)

31

d)

255

50.

What is the largest 2-digit hexadecimal value?

a)

FF

b)

99

c)

9F

d)

F9

51.

What is the decimal equivalent of the hexadecimal digit B?

a)

10

b)

11

c)

12

d)

13

52.
What is 27 in hexadecimal
a)
1B
b)
17
c)
11011
d)
1C
53.
What is 126 in hexadecimal
a)
7E
b)
111110
c)
76
d)
7F
54.

Which of the following classification(s) apply to the number -2?

Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

55.

Which of the following classification(s) apply to the number 42?

Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

56.

Which of the following classification(s) apply to the number 3.14?

Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

57.

Which of the following classification(s) apply to the number π\pi ? 
Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

58.

The set of all values that can be expressed as a ratio or faction.

a)

Natural numbers

b)

Integers

c)

Rational numbers

d)

Irrational numbers

e)

Real numbers

59.

A number which cannot be expressed as a fraction and which has an endless series of non-repeating digits.

a)

Natural number

b)

Integer

c)

Rational number

d)

Irrational number

e)

Real number

60.

The set of all whole numbers whether positive, negative or zero.

a)

Natural numbers

b)

Integers

c)

Rational numbers

d)

Irrational numbers

e)

Real numbers

61.

An integer is also a natural number

a)

Always

b)

Never

c)

Sometimes

62.

A rational number is also an integer

a)

Always

b)

Never

c)

Sometimes

63.

A rational number is also a real number

a)

Always

b)

Never

c)

Sometimes

64.

Which of the following classification(s) apply to the number -2?

Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

65.

Which of the following classification(s) apply to the number 42?

Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

66.

Which of the following classification(s) apply to the number 3.14?

Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

67.

Which of the following classification(s) apply to the number π\pi ? 
Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

68.

Which of the following classification(s) apply to the number 3\sqrt{3} ? 
Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

69.

Which of the following classification(s) apply to the number 47\frac{4}{7}  ? 
Select all that apply.

a)

Integer

b)

Natural number

c)

Rational

d)

Irrational

e)

Real

70.

A rational number is also a real number

a)

Always

b)

Never

c)

Sometimes

71.

A rational number is also an integer

a)

Always

b)

Never

c)

Sometimes

72.

An integer is also a natural number

a)

Always

b)

Never

c)

Sometimes

73.

The set of all whole numbers whether positive, negative or zero.

a)

Natural numbers

b)

Integers

c)

Rational numbers

d)

Irrational numbers

e)

Real numbers

74.

The set of all values that can be expressed as a ratio or faction.

a)

Natural numbers

b)

Integers

c)

Rational numbers

d)

Irrational numbers

e)

Real numbers

75.

A number which cannot be expressed as a fraction and which has an endless series of non-repeating digits.

a)

Natural number

b)

Integer

c)

Rational number

d)

Irrational number

e)

Real number

76.

11001101 Find the parity

a)

even

b)

odd

77.

Errors never occur during data transmission

a)

True

b)

False

78.

How many methods of error checking are there?

(a)  

79.

What are the methods of error checking?

a)

Parity check

b)

Checksum

c)

Record check

d)

Error check

80.

What must the parity bit be if using odd parity and the byte is:

00101111

a)

1

b)

0

81.

How is a checksum calculated?

a)

With an agreed algorithm

b)

carefully

c)

Like a parity check

d)

π r²

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