Class 3 Computer Worksheet: Class Test

Computer lesson 18: Class 3 computer test · Set 555 · 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.📄 A file name ends in .mp4. What is it most likely? (a) a video (b) a document (c) a sound (d) a picture
2. 2.True or false: Ctrl+P is the shortcut to print. (a) True (b) False
3. 3.💾 Which is bigger: 1 bit or 1 KB? (a) 1 KB (b) 1 bit
4. 4.🔢 A bit can be only 0 or ___. (a) 5 (b) 2 (c) 9 (d) 1
5. 5.💾 How many MB are there in 2 GB?
6. 6.💾 Which is bigger: 1 bit or 1 GB? (a) 1 bit (b) 1 GB
7. 7.💾 Which one is the working memory: RAM or storage? (a) RAM (b) storage
8. 8.📁 Which word means to “make an exact twin” (for a file or folder)? (a) rename (b) save (c) delete (d) copy
9. 9.⌨️ In a word processor, what does Ctrl+V do? (a) undo (b) paste (c) select all (d) copy
10. 10.🔍 Which is the odd one out? (a) keyboard (b) memory card (c) solid-state drive (d) hard disk
11. 11.💾 Which one holds apps that are open: RAM or storage? (a) storage (b) RAM
12. 12.💾 How many bits are there in 10 bytes?
13. 13.True or false: Ctrl+V is the shortcut to undo. (a) True (b) False
14. 14.💾 How many GB are there in 1 TB?
15. 15.Which shortcut do we press to undo? (a) Ctrl+C (b) Ctrl+S (c) Ctrl+Z (d) Ctrl+X
16. 16.Which file ending is a picture? (a) .avi (b) .png (c) .mp3 (d) .mp4
17. 17.🔍 Which is the odd one out? (a) keyboard (b) mouse (c) microphone (d) hard disk
18. 18.😮 You deleted a word by mistake. What brings it back? (a) Undo (b) Copy (c) Save (d) Cut
19. 19.💾 Which is smaller: 1 KB or 1 TB? (a) 1 KB (b) 1 TB
20. 20.Which of these is software? (a) a scanner (b) a keyboard (c) a mouse (d) a typing tutor
21. 21.🔍 Which is the odd one out? (a) a speaker (b) a mouse (c) a keyboard (d) a paint program
22. 22.🧩 Is a computer game hardware or software? (a) hardware (b) software
23. 23.Which file ending is a picture? (a) .avi (b) .jpg (c) .txt (d) .wav
24. 24.📁 Which word means to “throw it away” (for a file or folder)? (a) move (b) delete (c) rename (d) copy
25. 25.🏷️ Every file has a ___ so we can find it. (a) name (b) taste (c) weight (d) smell
26. 26.💾 Which is bigger: 1 TB or 1 bit? (a) 1 TB (b) 1 bit
27. 27.📄 A file name ends in .pdf. What is it most likely? (a) a sound (b) a picture (c) a video (d) a document
28. 28.True or false: Ctrl+A is the shortcut to select all. (a) False (b) True
29. 29.📄 A file name ends in .jpg. What is it most likely? (a) a video (b) a picture (c) a document (d) a sound
30. 30.👩‍💻 What do we call people who write software? (a) plumbers (b) farmers (c) programmers (d) tailors
31. 31.📄 A file name ends in .wav. What is it most likely? (a) a picture (b) a video (c) a document (d) a sound
32. 32.⌨️ In a word processor, what does Ctrl+C do? (a) print (b) redo (c) copy (d) paste
33. 33.⌨️ In a word processor, what does Ctrl+S do? (a) redo (b) undo (c) save (d) paste
34. 34.True or false: to create a file means to make a brand-new one. (a) False (b) True
35. 35.💾 How many GB are there in 2 TB?
36. 36.💾 Which is bigger: 1 GB or 1 byte? (a) 1 GB (b) 1 byte
37. 37.True or false: a paint program is software. (a) True (b) False
38. 38.Which of these is true of storage (like a hard disk)? (a) is the working memory (b) holds apps that are open (c) is permanent storage (d) loses data when off
39. 39.🧾 Software is a set of ___ for the computer. (a) screws (b) instructions (c) wires (d) buttons
40. 40.What does it mean to create a file? (a) change its name (b) get rid of it (c) make a brand-new one (d) put it in another place

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