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Converting Denary to Binary

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Set it as homework or classwork and every answer is marked as pupils go, with feedback on what they got wrong. The scores go straight into your mark book, so you can see who needs help before the next lesson.

  • 14 questions
  • 30 marks
  • about 35 minutes
  • marked instantly

Question types: binary conversion, multiple choice, fill the gap, true or false, multi-part.

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You are converting a denary number to binary using the subtraction method. At one place value, your remaining number is SMALLER than that place value. What do you write?

Pick an answer: it's marked straight away, just as your pupils would see it.

About this resource

Computing — Binary & the Language of Computers, Lesson 3. Converting a denary number (0-255) to an 8-bit binary number using the subtraction/place-value method, with worked examples and practice.

11 slides.

Lesson outline

  1. Do Now — Retrieval
  2. Recap — The Place Value Table
  3. Hinge Check — When It Doesn't Fit
  4. Worked Example 1 — The Subtraction Method
  5. Worked Example 2 — Leading Zeros
  6. Practice — Convert Denary to Binary
  7. Double-Checking Your Work
  8. Main Activity — Convert Denary to Binary
  9. Plenary — Back to Our Objectives
Unit bundleBinary
Part of: Binary: the whole unitEvery resource in the unit in one zip.

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