Adding Binary/Adding Hex

It's simple to add binary numbers but a little hard to add hex numbers. We'll start with binary.

  1010

+0101

  1111

See? It's easy! All you have to do is add 1+0 but it gets a little harder.

       1

   1001

 +0101

   1110

Do you see how there was a 1+1 in there? When that happens you put a zero there and put a 1 over the one behind it.

   1    1

   0101

 +0011

   1111       

How you add hex isn't very easy. If you know how to count in hex it's easier though.

   8
 +2
  A

You would think I should have put a ten there right? Well in hex it doesn't work that way because A=10 in hex.

   9
 +3
   C
When you start to overlap it get's even harder.

    8
  +8
  10


Now that must look even weirder right? Because normally you would say 8+8=16. Well 1 0 is actually the first number you get to when you overlap. The next numbers in hex are 11,12,13,14,15,16,17,18,19,1A,1B,1C,1D,1E,1F,20,21,22,23,24,25,26 etc.