Your friends are amazed when you magically transform your hands into a calculator and multiply on your fingers! 

Materials 

Pen 

Preparation 

Draw these calculator keys on your palms with a ballpoint pen. 

  

Presentation 

Tell your friend that she can multiply by 9 on your hands just as she would on a regular calculator. After she enters the numbers and pushes [=] , just bend over the finger that is multiplied by 9. The fingers that are standing up tell her the answer!