Y7/Y8 Binary

What is the denary number system?

• It counts the number of dens
• Our usual base 10 number system
• A special number system for computers
• Den Ary's number system

Which is the odd one out?

• decimal

• base 10

• denary

• base 2

What is the point of binary?

• It represents how computers store information in transistors

• Because we like to make you do extra maths ;-D

• For the lulz

• Because it describes star systems

What are the only symbols you can use in binary?

• 0 and 1

• 1 and 2

• 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

• A, B, C, D, E,...

How can I tell if a number is (probably) binary?

• It's only got 1's and 0's in it

• There are eight digits

• It starts with 0x

• It has a 1 at the end.

Which of these is the correct sequence for the place values for binary numbers?

• 128, 64, 32, 16, 8, 4, 2, 1

• 1, 0

• 100000, 10000, 1000, 100, 10, 1

• 1, 2, 4, 6, 8, 10, 12

Unless you're told otherwise, how many binary digits (bits) should a binary number have?

• 1

• 8

• 7

• 255

Convert 00010001 to denary (decimal)

• 17

• 27

• 37

• 47

Convert 01000100 to denary (decimal)

• 58

• 68

• 78

• 88

Convert 00100100 to denary (decimal)

• 26

• 36

• 46

• 56