Class 3 computer test — Computer worksheet

Remember

Find the topic, use the idea — “decide which lesson a question comes from, then use that lesson’s idea”

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

Use it for: Revising Class 3 computers before a school test or the end of the term.

Worked example: 💾 How many bits are there in 3 bytes? → 24

✏️ Practice

Read the question, think about the computer at home or school, then tap your answer. Stuck? Press “Show me how”.

🏁 Lesson 18 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🎖️ Class 3 Computer Champ badge when you pass — and a certificate when you finish all 6 lessons of Part 3 · Class 3 Computer. You can still take the test without signing in.

🖨️ Class 3 Computer Worksheet: Class Test

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)