Number systems
Binary addition and subtraction worksheets
Print 16 binary arithmetic problems with addition, subtraction or a balanced mix. Choose four operand ranges and include a separate answer key.
Preview and downloadNumber systems practice
Decimal and binary conversion worksheets
Convert between decimal and binary with 16 questions, four number ranges and a separate answer key. Customize the worksheet and download a Letter or A4 PDF.
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Start with a ready-made worksheet
Complete eight decimal-to-binary questions and eight binary-to-decimal questions. Use the base label to identify how to read each number.
Download the practice pages alone, or include a separate answer key or teacher model. Longer activities may use more than one page.
Customize this worksheetPaper sizes and printing help · More number systems activities
One value, two representations
Each sheet has eight questions in each direction. The selected decimal interval applies to the value, whichever base is printed in the question. Both endpoints are included so that the smallest and largest representations receive practice.
The preview and downloaded PDF use the same questions. Include answers to append a separate key, or download just the student worksheet.
Learning objective
What this activity builds
Represent the same whole number in base ten and base two using powers of two.
Worked example
Write 13 in binary.
1101 in base 2.
The digits select 8 + 4 + 0 + 1 = 13. Reading the same digits as a decimal number would give a different value.
Teaching notes
Make the practice count
- Write the place weights 1, 2, 4, 8 and so on from right to left.
- Keep zeroes where a place contributes nothing.
- Check a conversion by converting back.
- Begin with 0–15 before introducing longer binary numbers.
Make it yours
Customize the practice
Choose your options, update the preview, then download the exact same pages.
Choose a range and operation profile. Every worksheet contains 16 reproducible tasks with a separate answer view.
Enlarged pages scroll. PDF size stays the same.
A useful next step
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