Learn amazing number magic tricks with step-by-step instructions and mathematical explanations. Perfect for parties, classrooms, and impressing friends.
The 1089 Trick
Step 1: Think of a 3-digit number where the first digit is larger than the last (e.g. 732) Step 2: Reverse the digits (e.g. 237) Step 3: Subtract the smaller from the larger (732 - 237 = 495) Step 4: Reverse the result (594) Step 5: Add the result and its reverse (495 + 594 = 1089)
Follow these steps
The Reveal
The answer is always 1089!
Why It Works
This works because of the algebraic properties of 3-digit numbers. If the number is 100a + 10b + c, the subtraction always produces a number whose digits sum to 18, and the final addition always yields 1089.
Trick Number
1 of 6
Tip
Practice the steps before performing for an audience!