Think of a number with two digits. For example 43.
Now add the two numbers together. For exammple 4 + 3 = 7.
Next, subtract the new number from your orginal number. For example 43 - 7 = 36.
Finally, look at the symbol next to your number. Remember it.
Now the Magic Gohper will read your mind and tell you what your symbol is. Watch carefully.
Did he get your number right? How does he do it?!