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1.2.4: Binary, Hex, Addition & Shifts

Total questions: 43

Worksheet time: 22mins

Name
Class
Date
1.

How many bits are in a byte?

(a)  

2.
Colours in art packages are often given Hex codes as illustrated above with #00ccff. Why is Hex used in this way rather than the actual 24-bit colour value? Select 3 suitable reasons:
a)
It is easier for people to remember hex codes than a binary value
b)
The code only takes up six characters on screen rather than 24
c)
It is quicker and less prone to error to re-enter a six character hex value than a long binary value.
d)
It takes up less memory in the computer
e)
Colours can not be stored in binary values
3.

Convert the binary number 0001 1011 to denary

(a)  

4.

Convert the binary number 1110 0110 to denary

(a)  

5.

Convert the binary number 0010 1001 to denary

(a)  

6.
Which of the following binary numbers represents the denary number 87?
a)
0101 1010
b)
1100 0100
c)
0101 0111
d)
0001 1010
7.
A photographer takes up to 2000 photographs per week. Each photograph requires 5MB of storage on the camera’s memory card. Select the camera memory card with the smallest capacity that can store 2000 photographs.
a)
4GB
b)
8GB
c)
16GB
d)
32GB
8.

Convert the denary number 57 to binary

(a)  

9.

Convert the denary number 139 to binary

(a)  

10.

Convert the denary number 39 to binary

(a)  

11.
There are 8 bits in a byte. What is 4 bits called?
a)
Bot
b)
Bittle
c)
Nibble
d)
Sandwich
e)
By
12.

Convert the hexadecimal number 10 to denary

(a)  

13.

Convert the hexadecimal number 5F to denary

(a)  

14.

Convert the hexadecimal number C4 to denary

(a)  

15.

Convert the hexadecimal number 22 to denary

(a)  

16.

Convert the denary number 134 to hexadecimal

(a)  

17.

Convert the denary number 204 to hexadecimal

(a)  

18.

Convert the denary number 46 to hexadecimal

(a)  

19.

Convert the hexadecimal number A5 to binary

(a)  

20.

Convert the binary number 0110 1101 to hexadecimal

(a)  

21.
Computers are made up of complicated hardware that store and process ________
a)
data
b)
hardware
c)
series
d)
states
e)
combinations
22.
If you break a computer down into its most basic components you have millions of _______ that either allow electricity to flow, or not.
a)
circuits
b)
hardware
c)
series
d)
states
e)
combinations
23.
Imagine a whole row of light switches that you can switch on and off in different _______ to mean different things. Each switch is either on or off.
a)
combinations
b)
hardware
c)
series
d)
states
e)
processors
24.
Each switch has only two ______
a)
states
b)
hardware
c)
series
d)
combinations
e)
processors
25.
That is why everything stored in a computer can be stored as a _______ of 1s and 0s.
a)
series
b)
hardware
c)
states
d)
combinations
e)
processors
26.
These are called binary __________
a)
digits
b)
hardware
c)
series
d)
states
e)
combinations
27.
How would you express the denary number 254 in 8 bit binary?
a)
1111 1110
b)
1010 1010
c)
1111 1111
d)
1111 1101
28.
Which of these HTML RGB hex codes is most likely to display the colour red?
a)
#FF0000
b)
#FFFFFF
c)
#FF00FF
d)
#F0F0F0
e)
#RREEDD
29.
A single binary digit: 1 or 0
a)
Bit
b)
Gigabyte
c)
Denary
d)
Megabyte
e)
Kilobyte
30.
8 bits
a)
Byte
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
31.
4 bits
a)
Nibble
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
32.
1024 bytes
a)
Kilobyte
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
33.
1024 kilobytes
a)
Megabyte
b)
Gigabyte
c)
Denary
d)
Bit
e)
Kilobyte
34.
1024 megabytes
a)
Gigabyte
b)
Denary
c)
Bit
d)
Megabyte
e)
Kilobyte
35.
1024 gigabytes
a)
Terabyte
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
36.
Base 2 number system, used by computers, uses the digits 1 & 0 only
a)
Binary
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
37.
Base 10 number system, how we normally count, uses digits 0 to 9
a)
Denary
b)
Gigabyte
c)
Bit
d)
Megabyte
e)
Kilobyte
38.
Base 16 number system, used by humans to represent groups of four bits and a time, uses digits 0 to F
a)
Hexadecimal (Hex)
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
39.
When the result of a binary calculation is too large to be store in the space reserved for that type of data
a)
Overflow
b)
Gigabyte
c)
Denary
d)
Bit
e)
Megabyte
40.

Add the binary numbers 1100 1100 and 0011 0011

(a)  

41.

Add the binary numbers 0100 1111 and 0011 0011

(a)  

42.

Perform a left binary shift of 1 on the binary number 0110 0110

(a)  

43.

Perform a right binary shift of 3 on the binary number 0110 0110

(a)  

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