Number trick with 1089

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!