There are some rules for Binary Addition:
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Binary Addition Rules
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0 + 1 = 1
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1 + 0 = 1
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0 + 0 = 0
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1 + 1 = 0 (carry one)
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1 + 1 + carry = 1 (carry one)
Rules for Subtraction:
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Binary Subtraction Rules
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- take the second value (the number to be subtracted) and apply TWO'S COMPLEMENT (change 1 for 0 and 0 for 1)
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- add 1 to the result (of two’s complement)
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- add the complemented value to the first value; during addition we disregard the last carry
Rules for Multiplication:
Binary Multiplication Rules
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- Binary multiplication can be achieved in a similar fashion to multiplying decimal values.
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- Multiply each digit using the standard method;
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- Add the results using the binary addition rules
Rules for Division:
Binary Division Rules
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- Binary division can be achieved in a similar fashion to dividing decimal values.
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- Divide the divisor from the dividend
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- Use the simple subtraction rules whenever necessary, as follows:
•0 – 0 = 0
•1 – 1 = 0
•1 – 0 = 1
•0 – 1 = 1 (with borrow)
