For this trick you need 2 matches and a ring (a ring thats slightly loose)  and a black marker

Preparation:

• using a black marker draw on the red part of one match.
• put 1 match (the colored one) in the ring out of sight.

The Method:

hello everyone I am Ben Guilfoyle and I have a fairly easy mentalism effect and I hope you enjoy it.

Items:victim, calculator (optional), pen and paper (optional),4 cents and 1 cent coin that has been cut in half.

step1: Tell your victim to write down a number on the piece of paper but the number must not have a zero it must be double digited and must be between 1-100.

step2: Once he/she wrote there number tell them you will make a prediction with coins.

step3: Pick take some coins from your pocket.

step4: Tell the person to ad the 2 didgets in there number together then subtract it from the original number next ad the 2 numbers in the answer together and divide by 2 eg:45, 4+5=9, 45-9=36, 3+6=9, 9/2=4.5