How we worked it out
Updated as you change the numbers.
- Each binary digit is worth 2 times the digit to its right. The numbers are converted to exact integers, combined, and converted back.
Method and assumptions
In base 2, the digits from the right are worth 1, 2, 4, … To convert a decimal number, divide by 2 repeatedly and read the remainders from last to first. Negative results are shown with a minus sign rather than in two’s complement.
Questions
What is 101101 in decimal?
45: 32 + 8 + 4 + 1.
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.