These mental math tricks are the bread and butter of mentalists. They let you calculate impossibly fast and appear to read minds.
Think of a number. Multiply by 2. Add 10. Divide by 2. Subtract original number.
Do this fast and they'll think you're calculating something complex. You're not - it's just math.
Month × 2 + 5 = A
A × 50 + Day = B
B - 250 = First 2 digits = month, Last 2 = day
Ask them to do this calculation, they tell you the result - you tell them their birthday.
Ask first 3 digits. Multiply by 80, add 1, multiply by 250, add last 4 digits twice, subtract 250, divide by 2.
This is the ultimate "pickup artist" mentalism trick.
Pick any 3-digit number with different first/last digits. Reverse it. Subtract smaller from larger. Reverse that result. Add together.
Write 1089 on a prediction card before the show. This mathematically guarantees your prediction is correct.
Don't say "let me do some math." Say "I'm going to calculate your energy." Make it sound mystical, not mathematical.
Ask someone to pick a 4-digit number. Double it in your head. Double it again. Add their original number. Divide by 3.
Here's the secret: It's always their original number. Do it fast and act like it's hard.
Use MagiCulator to automate these calculations and nail every performance.
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