Do it!

Here is a math trick so unbelievable that it will stump you.

Grab a calculator. (you won't be able to do this one in your head)

1. Key in the first 3 digits of your phone number (Not the area code)

2. Multiply by 80

3. Add 1

4. Multiply by 250

5. Add this to the last 4 digits of your phone number

6. Add to this the last 4 digits of your phone number again

7. Subtract 250

8. Divide the number by 2

Here is a math trick so unbelievable that it will stump you.

Grab a calculator. (you won't be able to do this one in your head)

1. Key in the first 3 digits of your phone number (Not the area code)

2. Multiply by 80

3. Add 1

4. Multiply by 250

5. Add this to the last 4 digits of your phone number

6. Add to this the last 4 digits of your phone number again

7. Subtract 250

8. Divide the number by 2