Binary To Denary

What is a binary number?

• Two people walking in pairs

• A pair of numbers in a table

• A number system that only uses two digits: 1 and 0.

• Two canaries

Computers use binary to (a)   data.

The binary system is known as a ‘base 2’ system. This is because:

• There are only two options

• There are only two digits to select from (1 and 0)

• 2 is a lucky number

• Data is converted using the power of two.

What is the binary number 0110 in decimal?

• 6

• 4

• 10

• 2

What is the binary number 1111 in decimal?

• 6

• 4

• 15

• 44

(a)   is the number system most commonly used by people.

How many digits can the denary system use?

• 2

• 4

• 10

• 100

A denary number is also known as ............ or base 10.

• denary

• decimal

• ascii

• decametre

What is the denary number 9 in binary?

• 111

• 1011

• 1001

• 1111

What is the denary number 4 in binary?

• 1111

• 1001

• 1111

• 0100