Binary code

Convert 128 to binary

• 10000000
• 01111110
• 10000001
• 11001100

Convert 65 to binary

• 01100001
• 00100001
• 01000001
• 00100101

Convert 37 to binary

• 00100101
• 00100011
• 00100111
• 01000101

Convert 00010001 to decimal

• 17
• 27
• 37
• 47

Convert 11001100 to decimal

• 224
• 134
• 104
• 204

Convert 11111111 to decimal

• 255
• 245
• 235
• 225

What are the only two numbers you can use in binary?

• 0 and 1
• 1 and 2
• 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
• 1, 2, 4, 8, 16

What is 12 in binary?
HINT: It has an 8 and a 4 in it!

• 12
• 11
• 1100
• 1011

If 1 and 0 mean on and off. Is the number 1 on or off?

• ON
• OFF

What type of numbering system is ordinarily used by people?

• Decimal

• Binary

• Denary