#3 Domino Magic II
You ask your friend
to choose any domino when your back is turned. When the magic words "Hocus
Pocus" are entered in a calculator the number of dots on each part of the domino
suddenly appear!
Materials

A set of dominoes 

A calculator 
Presentation
You spread a set of dominoes out on a table, and then ask
your friend to secretly choose one.
Example
Hand him the calculator and tell him to:

1. Enter one of the
domino's numbers.(Blank 0)
3 

2. Multiply that number by 5.
3x5= 15 

3. Add 7 to that answer.
15+7=22 

4. Double that total.
22 x 2=44 

5. Add the domino's other number to that result. 44+6=50 
Finally, tell your friend to hand you the calculator with his answer. Enter the
magic words "Hocus Pocus" by pushing (minus)
1... 4... =
As you push the buttons, say "HoCusPoCus," and the number of dots
on both parts of the domino will magically appear!
5014=36
(If your friend had entered the 6 first, your final total would have
been 63.)
Exceptions
When your friend chooses a
domino with one blank and enters the 0 first, your final total has only one digit.
Example: The final total is 5.
5=O 5 so the domino has a blank and a 5.
When
your friend chooses a domino with two blanks, your final total will be 0 because 0 = 00.
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Page by: Mathman (Bruce A. Titen) ©1998
Questions or Comments email me at: HBWmathman@oocities.com
