💡 Activity – Solutions

1️⃣ Octal → Decimal

• a) 100₈ = 64₁₀
• b) 512₈ = 330₁₀

2️⃣ Decimal → Octal

• a) 64₁₀ = 100₈
• b) 330₁₀ = 512₈

3️⃣ Octal → Binary (direct)

• a) 100₈ → 1|0|0 → 001 000 000 → 0100 0000₂ (padded to a full byte)
• b) 512₈ → 5|1|2 → 101 001 010 → 0001 0100 1010₂ (padded to 12 bits)

4️⃣ Binary → Octal (direct)

• a) 0100 0000₂ → group 010|000|000 → 4 0 0 → 100₈
• b) 0001 0100 1010₂ → group 000|101|001|010 → 0 5 1 2 → 512₈ (drop leading 0)