# Large Quantities

In this lesson, we will explore the prefixes used for measuring size, such as 'kilo-', 'mega-', 'giga-', and 'tera-'. We will revisit digital computing devices using binary digits to represent all information (including programs).

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Large Quantities

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.In the ASCII Art shown below, every character is represented by a sequence of 8 bits. How many bytes are required for one individual character in the image?

1/5

Q2.In this ASCII image, there are 3 lines, with 20 characters in each line.This includes spaces and the special characters that move to the next line. How many characters are in the image in total?

2/5

Q3.How many bits are required for representing the entire image? Hint: each character is a byte and there are sixty characters in the ASCII image.

3/5

Q4.How many bytes are required for representing the entire image?

4/5

Q5.You really enjoy taking pictures with your mobile phone. You purchase a 16GB memory card and you want to know how many pictures you can store on the memory card. The size of each individual picture is approximately 4MB. How many pictures can be stored on your memory card?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Large Quantities

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.In the ASCII Art shown below, every character is represented by a sequence of 8 bits. How many bytes are required for one individual character in the image?

1/5

Q2.In this ASCII image, there are 3 lines, with 20 characters in each line.This includes spaces and the special characters that move to the next line. How many characters are in the image in total?

2/5

Q3.How many bits are required for representing the entire image? Hint: each character is a byte and there are sixty characters in the ASCII image.

3/5

Q4.How many bytes are required for representing the entire image?

4/5

Q5.You really enjoy taking pictures with your mobile phone. You purchase a 16GB memory card and you want to know how many pictures you can store on the memory card. The size of each individual picture is approximately 4MB. How many pictures can be stored on your memory card?

5/5

# Lesson summary: Large Quantities

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## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga