Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 116 · 40 questions

Remember (Find the topic, use the idea): Read the question and find its topic: hardware or software, units, memory, files, or editing text. Use that lesson’s idea — can you touch it, multiply to change units, RAM forgets, which file action, which shortcut. For unit sums, write the rule first (1 byte = 8 bits, 1 KB = 1024 bytes) and then multiply.

1. 1.Which file ending is a picture? (a) .png (b) .pdf (c) .mp3 (d) .txt
2. 2.True or false: Ctrl+Y is the shortcut to redo. (a) False (b) True
3. 3.💾 Which is smaller: 1 GB or 1 MB? (a) 1 MB (b) 1 GB
4. 4.🧩 Is a mouse hardware or software? (a) software (b) hardware
5. 5.True or false: RAM is the working memory. (a) True (b) False
6. 6.💾 Which one loses data when off: RAM or storage? (a) RAM (b) storage
7. 7.📄 A file name ends in .gif. What is it most likely? (a) a document (b) a video (c) a sound (d) a picture
8. 8.🏷️ Every file has a ___ so we can find it. (a) weight (b) name (c) taste (d) smell
9. 9.Which of these is an output device? (a) hard disk (b) monitor (c) solid-state drive (d) memory card
10. 10.Which shortcut do we press to redo? (a) Ctrl+X (b) Ctrl+Z (c) Ctrl+Y (d) Ctrl+S
11. 11.⌨️ In a word processor, what does Ctrl+Y do? (a) redo (b) select all (c) cut (d) copy
12. 12.💾 Which is smaller: 1 bit or 1 byte? (a) 1 byte (b) 1 bit
13. 13.Which file ending is a video? (a) .pdf (b) .jpg (c) .mkv (d) .gif
14. 14.True or false: Ctrl+A is the shortcut to select all. (a) True (b) False
15. 15.💾 How many GB are there in 2 TB?
16. 16.📄 A file name ends in .jpg. What is it most likely? (a) a video (b) a sound (c) a document (d) a picture
17. 17.True or false: to delete a file means to see what is inside. (a) True (b) False
18. 18.📄 A file name ends in .mp4. What is it most likely? (a) a picture (b) a video (c) a document (d) a sound
19. 19.What does it mean to move a file? (a) get rid of it (b) store your work (c) put it in another place (d) keep your work for later
20. 20.💾 Which is smaller: 1 TB or 1 GB? (a) 1 GB (b) 1 TB
21. 21.💡 What is the smallest unit of computer memory? (a) bit (b) GB (c) byte (d) KB
22. 22.🔍 Which is the odd one out? (a) a web browser (b) a typing tutor (c) a word processor (d) a monitor
23. 23.🔍 Which is the odd one out? (a) microphone (b) mouse (c) scanner (d) solid-state drive
24. 24.💾 How many MB are there in 1 GB?
25. 25.📄 A file name ends in .pdf. What is it most likely? (a) a document (b) a video (c) a picture (d) a sound
26. 26.What does it mean to save a file? (a) get rid of it (b) see what is inside (c) give it a new name (d) store your work
27. 27.⌨️ In a word processor, what does Ctrl+Z do? (a) cut (b) redo (c) undo (d) paste
28. 28.🧰 Is a keyboard a storage, input or output device? (a) a storage device (b) an input device (c) an output device
29. 29.💾 Which is smaller: 1 byte or 1 KB? (a) 1 byte (b) 1 KB
30. 30.🧾 Software is a set of ___ for the computer. (a) instructions (b) wires (c) buttons (d) screws
31. 31.↩️ You pressed Undo by mistake. Which command puts the change back? (a) Cut (b) Redo (c) Delete (d) Copy
32. 32.True or false: storage (like a hard disk) is the working memory. (a) True (b) False
33. 33.✂️ You want to move a sentence to the end. What do you use first? (a) Cut (b) Undo (c) Print (d) Delete
34. 34.🔍 Which is the odd one out? (a) an operating system (b) a paint program (c) a speaker (d) a computer game
35. 35.💾 Which one holds apps that are open: RAM or storage? (a) storage (b) RAM
36. 36.🧩 Is a word processor hardware or software? (a) software (b) hardware
37. 37.💾 Which is smaller: 1 byte or 1 MB? (a) 1 MB (b) 1 byte
38. 38.True or false: to copy a file means to put it in another place. (a) False (b) True
39. 39.True or false: Ctrl+C is the shortcut to select all. (a) True (b) False
40. 40.💾 Which is bigger: 1 byte or 1 bit? (a) 1 bit (b) 1 byte

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