Year 9 Data Representation review

Convert 128 to binary

• 10000000
• 01111110
• 10000001
• 11001100

A byte is

• 8 bits
• 4 bits

Convert 64 to binary

• 10000000

• 01111110

• 01000000

• 11001100

Computers use binary because they have circuits which are either on or off, which gives them two states to work from to make calculations and run processes - True or False?

• True
• False

What is the largest number you can represent with 8 bits?

• 64
• 128
• 200
• 255

In computing, a bit is

• 8 bytes
• a single    0 or 1     on or off

in Binary Addition Rules - What does 0 + 0 equal?

• 0

• 0 carry the 1

• 1

• 2

Part 1: What is the answer to 100 + 001?

• 110
• 101
• 010
• 011

What is the answer to 0110 + 0101?

• 1011
• 1101
• 1110
• 1111

Convert the denary number 255 to hexadecimal.

• FF

• F0

• FE

• F1