## Enter 3 digit number below (no zeros and no repeating digits):

##### How does the 1089 Number Trick Calculator work?
Free 1089 Number Trick Calculator - Demonstrates the 1089 number trick for a 3 digit number that you enter
This calculator has 1 input.

### What 6 formulas are used for the 1089 Number Trick Calculator?

Take a 3 digit number and call this a
Reverse the digits and call this b
Take the maximum of a and b and subtract the minimum of a and b
Reverse the digits of this number
Add the numbers together in Steps 3 and 4

For more math formulas, check out our Formula Dossier
##### What 4 concepts are covered in the 1089 Number Trick Calculator?
1089 number trick
Take a 3 digit number. Subtract the palindrome of the 3 digit number. Take the result. Add this result to the palindrome of the result. The answer is 1089
algorithm
A process to solve a problem in a set amount of time
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.