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WorksheetsY8 Revision Data representation
Total questions: 30
Worksheet time: 22mins
Name
Class
Date
1.
What is 0101 in denary (base 10)?
(a)
2.
Convert 128 to binary
a)
10000000
b)
01111110
c)
10000001
d)
11001100
3.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
4.
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
5.
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
6.
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
7.
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
8.
Denary is numbers humans use in every day life
a)
True
b)
False
9.
Binary uses electrical signals
a)
True
b)
False
10.
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
11.
Convert the hexadecimal number C9 to binary
a)
1100 1001
b)
1100 1000
c)
1100 1010
d)
1100 0101
12.
What letters does hexadecimal use?
a)
A-F
b)
A-D
c)
P-W
d)
A-Z
13.
How many hexadecimal digits is equal to one nibble of binary?
a)
1
b)
2
c)
3
d)
4
14.
What does 'A' equal in denary?
a)
8
b)
9
c)
10
d)
11
15.
What does 'F' equal in denary?
a)
14
b)
15
c)
16
d)
17
16.
Convert 173 Decimal to Binary
a)
11000111
b)
11011101
c)
10101101
d)
01110011
17.
Convert the Hex number 1F to binary.
a)
00111111
b)
00001111
c)
00010111
d)
00011111
18.
Convert the binary number 10101010 to Hex
a)
AA
b)
BB
c)
CC
d)
DD
19.
Write 45 as a binary number
a)
00101111
b)
00011101
c)
00101011
d)
00101101
20.
Binary = 0100 1010 0011 1101
Hex = ?
Hex = ?
a)
43AD
b)
4A3D
c)
D3A4
d)
3A4D
21.
What is a binary number?
a)
Two people walking in pairs
b)
A pair of numbers in a table
c)
A number system that only uses two digits: 1 and 0.
d)
Two canaries
22.
Computers use binary to (a) data.
23.
What is the binary number 1111 in decimal?
a)
6
b)
4
c)
15
d)
44
24.
(a) is the number system most commonly used by people.
25.
A denary number is also known as ............ or base 10.
a)
denary
b)
decimal
c)
ascii
d)
decametre
26.
What is B in denary
a)
10
b)
11
c)
12
d)
13
27.
What is E in denary
a)
10
b)
12
c)
14
d)
16
28.
What is 19 in hexadecimal
a)
13
b)
10011
c)
19
d)
1A
29.
Convert 10 to binary.
a)
10
b)
1010
c)
1111
d)
1000
30.
What is 5 in binary?
a)
1001
b)
1111
c)
0101
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