We’ve often noted that whether had ancient man known binary, we could all count to 1023 on our fingers. We thought about that while watching [Numberphile’s] latest video about “Russian” multiplication ...

The lesson begins by revisiting how number systems work, then builds students towards being able to perform binary addition. Add two binary numbers, each less than 7 bits. Multiply a binary number by ...

To multiply a negative number, an arithmetic binary shift moves all the digits in the binary number along to the left and fills the gaps after the shift with 0: to multiply by two, all digits shift ...