Q&A for How to Subtract Binary Numbers

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How can I make it easier to remember how to subtract binary numbers on an exam?

Community Answer

This isn't a memorization technique, but you could try doing binary subtraction, then afterwards check whether you have got the correct answer by converting the numbers to decimal and then subtracting normally. This might help solidify your understanding and confidence in this topic.

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How do I calculate binary numbers?

Asad Naeem

Community Answer

You can calculate by dividing with 2 and storing the remainder. For example: 12 dec binary = 12/2 = 6 (rem) 0. Now, 6/2 = 3 (rem) 0. Similarly, 3/2 = 1 (rem) 1, so binary will be 1100.

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Is 99 binary or decimal?

WaleedAlbaker

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It's a decimal number because 9 is included with the decimal digits which are (0,1,2,3,4,5,6,7,8,9) and you can not find the number 9 in binary because it contains only (0,1) digits.

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What are the steps to convert binary numbers to decimal numbers?

Donagan

Top Answerer

See Convert from Binary to Decimal .

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What if the question has a letter such as x10-1112?

Community Answer

A letter-prefix means which base is being used, where b is binary, d is decimal and x is hexadecimal. Before you an calculate these questions you must first convert them into binary. x10 = b1000.

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What is a binary number?

Donagan

Top Answerer

It is a number expressed in the base 2 (rather than the usual base 10). It is expressed using only ones and zeros.

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Question

How do I solve the binary formula 11011.001-1011.11?

Community Answer

Remove the "." Calculate normally and then add the "." back where it was. In your case it was the first 3 digits from the left.

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How do I solve 10010 - 1011?

Community Answer

10010 = 18, 1011 = 11. 18 - 11 = 7, which in binary is 0111.

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Question

Can someone explain (011110 - 110010)?

Community Answer

Work from right to left: 0-0 is zero, record. Then 1-1 is zero, record. 1-0 is one, record.1-0 is one, record, 1-0 is one, record. Then 0-1 is difficult, in binary one borrows an imaginary one, when borrowed has 2 in the next field, then now 2-1 is one. Your final answer is 111100.

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