Binary- Revision

Convert the following binary number into denary: 11111111

Convert the following binary number into denary: 00001111

Convert the following binary number into denary: 00000100

What is the number base used by computers to store all data?

• Decimal

• Hexadecimal

• Binary

• Octal

Answer explanation

Computers use the binary number base to store all data, representing information using combinations of 0s and 1s.

What is 54 in binary

• 110110
• 11011000
• 10011101
• 1111

What is 7 in binary

• 111
• 101
• 1000
• 1001

Calculate the binary addition:
1001
1011
Use binary addition rules + whiteboards!

• 10100
• 010101
• 011100
• 01010011

Calculate the binary addition:
01111
11011
Use binary addition rules + whiteboards!

• 1010100
• 101110
• 111010
• 101010