How do I convert Binary numbers to decimal numbers?

Answer 1

By adding the value of the digits. Base 10 places increase by powers of 10. Base 2 places increase by powers of 2.

2^0 = 1

2^1 = 2

2^2 = 4

2^3 = 8 and so on.

A base 2 number like 1101 would have one 1, one 4 and one 8. The base 10 equivalent is 13.