Hexadecimal

Hexadecimal

Working with base 16 numbers

Multiple Select

What will you learn in this lesson?

• Define the term "hexadecimal"

• Explain why hexadecimal is used

• Convert numbers between hexadecimal and binary

• How to count to 100 in hexadecimal

Fill in the Blanks

Write down all the binary digits you just saw

Fill in the Blanks

What is the number base of hexadecimal?

Fill in the Blanks

How many unique digits are there in hexadecimal?

Multiple Choice

What set of digits is available in hexadecimal?

• 0..9 and A..F

• 0..15

• 0..9 and a..f

• 0..9 and A..Z

Fill in the Blanks

What is the (decimal) value of the hexadecimal digit C

Fill in the Blanks

What hexadecimal digit represents the value 15?

Multiple Choice

How many bits are needed to represent one hexadecimal digit?

• 4

• 2

• 8

• 16

Fill in the Blanks

Convert this byte of data to hexadecimal:

0111 1110

Fill in the Blanks

Convert this byte of data to hexadecimal:

1101 1001

Fill in the Blanks

The largest number that can be stored in a byte is 255.

What is this value in hexadecimal?

Fill in the Blanks

Convert this hexadecimal number to binary:

CA

Fill in the Blanks

Convert this hexadecimal number to binary:

EE

Multiple Choice

What is the decimal value of this hexadecimal number?

FFF

• 255

• 1023

• 2047

• 4095

Multiple Select

Choose all the places in Computer Science where hexadecimal numbers are used ....

• Representing RGB colours

• IPv6 addresses

• Device MAC addresses

• IPv4 addresses

Multiple Choice

What is the main reason that hexadecimal numbers are used in computer science?

• Shortens binary data by 75%

• Takes up less storage space in RAM

• They can represent a greater range of values than binary

• Easier to do arithmetic calculations

Open Ended

What was the most important thing you've learnt in this lesson and why?

Poll

How much of this lesson have you understood?

• None of it

• Some of it

• Most of it

• All of it