Question: how to add and subtract binary numbers?
Answer: It is possible to add and subtract binary numbers in a similar way to base 10 numbers. For example, 1 + 1 + 1 = 3 in base 10 becomes 1 + 1 + 1 = 11 in binary. In the same way, 3 – 1 = 2 in base 10 becomes 11 – 1 = 10 in binary.