A Neat Math Trick
My daughter taught me this trick today. And I thought that the teachers on Persona Paper might want to share this with their students or parents with their children.
Take any date.
For example, today is 17-12-2015
Jumble up the numbers: 21715120
Now, find the difference between the two numbers which is 4593195
Now add the digits in these numbers together (4+5+9+3+1+9+5)
The answer is 36.
Add these two digits together (3+6) and the answer is 9.
It is always 9, no matter what date you take. Try it with your date of birth or ask your students to try this with their dates of birth.
Sometimes tricks like these can liven up the classroom.
Let's take another date 01-01-2016
Jumbles up version: 61021010
Difference between two dates: 60008994
Adding digits: 36
Add these two digits together and the answer will be 9.
Aren't numbers amazing!
Image Credit » https://pixabay.com/en/mathematics-maths-blackboard-chalk-998343/ by ArtsyBee