Book 03: Subtraction

Subtracting is the system of just taking away the rest of the number. Watch say you have 8-3=? as a homework problem. Use the number dot method[in book 02], then just count the difference of the two numbers' dots.

How?
  8= 8 dots
-3= 3 dots   HOW MANY MORE DOTS DOES 3 NEED TO GET TO 8?
_________                                |
5                                               V

                                         Yes, that's right 5. And that's how you subtract.