Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 675 · 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 is the odd one out? (a) a calculator app (b) a webcam (c) a web browser (d) an operating system
2. 2.💾 How many bits are there in 9 bytes?
3. 3.💡 What is the smallest unit of computer memory? (a) GB (b) byte (c) KB (d) bit
4. 4.What does it mean to save a file? (a) get rid of it (b) make an exact twin (c) keep your work for later (d) throw it away
5. 5.📁 Which word means to “throw it away” (for a file or folder)? (a) delete (b) save (c) rename (d) open
6. 6.Which shortcut do we press to undo? (a) Ctrl+Y (b) Ctrl+C (c) Ctrl+X (d) Ctrl+Z
7. 7.💾 How many KB are there in 3 MB?
8. 8.✂️ You want to move a sentence to the end. What do you use first? (a) Undo (b) Cut (c) Print (d) Delete
9. 9.Which of these is hardware? (a) a music player app (b) a typing tutor (c) a web browser (d) a monitor
10. 10.True or false: Ctrl+V is the shortcut to paste. (a) False (b) True
11. 11.🏷️ Every file has a ___ so we can find it. (a) smell (b) taste (c) name (d) weight
12. 12.📄 A file name ends in .txt. What is it most likely? (a) a sound (b) a picture (c) a video (d) a document
13. 13.Which file ending is a picture? (a) .txt (b) .avi (c) .jpg (d) .mp3
14. 14.True or false: a monitor is an output device. (a) False (b) True
15. 15.💾 How many bytes are there in 1 KB?
16. 16.🔍 Which is the odd one out? (a) memory card (b) pen drive (c) microphone (d) hard disk
17. 17.📄 A file name ends in .gif. What is it most likely? (a) a document (b) a picture (c) a sound (d) a video
18. 18.📁 Which word means to “make an exact twin” (for a file or folder)? (a) create (b) move (c) rename (d) copy
19. 19.🔍 Which is the odd one out? (a) a web browser (b) a calculator app (c) a monitor (d) a paint program
20. 20.👩‍💻 What do we call people who write software? (a) programmers (b) tailors (c) plumbers (d) farmers
21. 21.💾 Which is smaller: 1 GB or 1 TB? (a) 1 TB (b) 1 GB
22. 22.💾 Which is smaller: 1 TB or 1 MB? (a) 1 TB (b) 1 MB
23. 23.True or false: Ctrl+V is the shortcut to cut. (a) True (b) False
24. 24.⌨️ In a word processor, what does Ctrl+P do? (a) copy (b) cut (c) select all (d) print
25. 25.✋ Which can we touch: hardware or software? (a) hardware (b) software
26. 26.📁 Which word means to “give it a new name” (for a file or folder)? (a) move (b) create (c) rename (d) open
27. 27.Which of these is hardware? (a) a paint program (b) a speaker (c) a calculator app (d) a word processor
28. 28.Which of these is true of storage (like a hard disk)? (a) is the working memory (b) loses data when off (c) keeps your saved files (d) holds apps that are open
29. 29.True or false: a speaker is software. (a) True (b) False
30. 30.💾 How many MB are there in 2 GB?
31. 31.🧩 Is a hard disk hardware or software? (a) software (b) hardware
32. 32.💾 How many bits are there in 2 bytes?
33. 33.True or false: an operating system is hardware. (a) True (b) False
34. 34.🧾 Software is a set of ___ for the computer. (a) buttons (b) instructions (c) wires (d) screws
35. 35.📂 What holds many files together, like a school bag holds books? (a) a mouse (b) a pixel (c) a speaker (d) a folder
36. 36.True or false: Ctrl+X is the shortcut to paste. (a) True (b) False
37. 37.True or false: a typing tutor is hardware. (a) False (b) True
38. 38.⌨️ In a word processor, what does Ctrl+X do? (a) cut (b) save (c) undo (d) select all
39. 39.📄 A file name ends in .mp4. What is it most likely? (a) a picture (b) a document (c) a sound (d) a video
40. 40.⌨️ In a word processor, what does Ctrl+A do? (a) save (b) print (c) select all (d) paste

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