Number trick with 1089


The number trick with 1089 has been around for centuries. To impress someone with this trick, he or she will need paper and pencils:


Here is how it goes:

Step #1:

Have the person write down any three digits number with decreasing digits (432 or 875).

Step #2:

Reverse the number you wrote in step #1.

Step #3:

Subtract the number obtained in step #2 from the number you wrote in step #1

Step #4:

Reverse the number obtained in step #3

Step #5:

Add the numbers found in step #3 and step #4


Example #1:


Step #1:

Have the person write down any three digits number with decreasing digits: 752

Step #2:

Reverse the number you wrote in step #1: 257

Step #3:

Subtract the number obtained in step #2 from the number you wrote in step #1: 752 - 257 = 495

Step #4:

Reverse the number obtained in step #3: 594

Step #5:

Add the numbers found in step #3 and step #4: 495 + 594 = 1089


Example #2:


Step #1:

Have the person write down any three digits number with decreasing digits: 983

Step #2:

Reverse the number you wrote in step #1: 389

Step #3:

Subtract the number obtained in step #2 from the number you wrote in step #1: 983 - 389 = 594

Step #4:

Reverse the number obtained in step #3: 495

Step #5:

Add the numbers found in step #3 and step #4: 594 + 495 = 1089


Example #3:


Step #1:

Have the person write down any three digits number with decreasing digits: 210

Step #2:

Reverse the number you wrote in step #1: 012

Step #3:

Subtract the number obtained in step #2 from the number you wrote in step #1: 210 - 012 = 198

Step #4:

Reverse the number obtained in step #3: 891

Step #5:

Add the numbers found in step #3 and step #4: 198 + 891 = 1089

This number trick with 1089 works with any 3 digits number as long as you choose a number with decreasing digits in step #1

So, it does not matter what number the person choose in step #1, have the person do the math and pretend you are not looking. When you call the answer as 1089, the person will be shocked! Cool!






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