Binary ↔ Decimal Conversions — 510 Fill-in-the-Blank Questions

This bank has 510 fill-in-the-blank questions covering every whole number from 1 to 255. Half ask students to convert a decimal number to binary; half ask them to convert a binary number to decimal. Each question shows the given value with a small base subscript, for example 125₁₀ or 0111 1101₂.

Use it to build practice quizzes, homework, or exit tickets on number base conversion — no multiple-choice guessing, students type the actual answer.

What you get

• A ready-to-import Canvas QTI .zip file (binaryDecimal.zip) — 510 unique fill-in-the-blank questions, values 1–255, both directions

• 2 printable 10-question worksheets (PDF, with answer keys)

• 2 printable 20-question assessments (PDF, with answer keys)

• A PDF guide covering import steps and answer-key behavior

Print the worksheets and assessments and use them right away — no setup required.

Import into Canvas

1. In your course, go to Settings → Import Course Content.

2. Set Content Type to QTI .zip file.

3. Upload binaryDecimal.zip.

4. Under Question Bank, choose an existing bank or create a new one to hold these questions.

5. Click Import and wait for the migration status to finish.

6. Open Quizzes → Manage Question Banks to see the imported questions, ready to drop into any quiz.

How Canvas grades answers

Fill-in-the-blank answers are matched as exact text, so here's exactly what's accepted:

• Decimal — the plain number (e.g. 125)

• Binary — no leading zeros, zero-padded to 8 digits, or zero-padded to 8 digits with a space after the 4th digit (e.g. 11001, 00011001, or 0001 1001)

In short: 11001, 00011001, and 0001 1001 all score correct for 25, but 011001 or 0011 001 does not.

Want more?

Need another worksheet or assessment? Visit CompSci.rocks to generate more printable PDFs any time — each one draws a fresh, randomized selection of questions from this same 510-question bank.