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Topic Content:
- Binary Subtraction
- Rules of Binary Subtraction
- Worked Examples
When you subtract binary numbers you will need to be careful when ‘borrowing’.
Rules of Binary Subtraction:
The rules of binary subtraction are as follows:
- 0 – 0 = 0.
- 0 – 1 = 1 ( with a borrow of 1)
- 1 – 0 = 1.
- 1 – 1 = 0.
When you borrow a number during subtraction, it becomes the number of the base you are subtracting from. For example:
- If you are subtracting in binary then the number you borrow will be 2.
- If you are subtracting in octal then the number you borrow will be 8.
Below are some worked binary subtraction examples.
Worked Example 1:
Solve 110 – 101
Solution
Explanation:
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