KwickClips Computer Systems · 40 sec · free
Where do you start adding binary numbers?
Short answer. From the rightmost column.
What is 1 + 1 in binary?
10, so write 0 and carry 1.
Binary addition
| Add | Sum | Carry |
|---|---|---|
| 0 + 1 | 1 | 0 |
| 1 + 1 | 0 | 1 |
| 1 + 1 + 1 | 1 | 1 |
Remember
| Start from the right |
| Carry 1 to the left |
In binary, is one plus one really one zero? Yes. Zero plus one is one. One plus one is zero, carry one. Three ones make one, carry one. Remember. Start from the right. Carry one to the left.
This clip is from the full lesson: Binary Arithmetic: Addition, Overflow, Two's Complement and Shifts — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ISC Class 11 Computer Science (868), Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478), Edexcel GCSE GCSE Computer Science (1CP2)
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What does a left shift by 1 do?40 secDisclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy