This document contains instructions for 3 magic tricks:
1. Have an audience member choose a number in a box, then use a "trik" of adding and subtracting digits to reveal the number.
2. Instruct a participant to multiply a chosen number by 3, add 1, then multiply by 3 again. The secret is that the number is actually multiplied by 10 with 3 added.
3. Tell a participant to multiply their number by 2, add 5, multiply the result by 5, and add 4. The last digit will always be 9, and the original number is the front digits minus 2.