**birthday math trick**! This math trick will involve some math calculations so be sure the person does the math correctly (may need to use a calculator).

*Note*: Make sure you try this trick out for yourself first, using your own birthdate.

**STEPS TO THE MATH TRICK**

- Add 18 to the month they were born
- Multiply by 25
- Subtract 333
- Multiply by 8
- Subtract 554
- Divide by 2
- Add their birth date
- Multiply by 5
- Add 692
- Multiply by 20
- Add only the last two digits of their birth year
- Subtract 32940 to get their birthday!

*Pretty Cool Math Stuff!*

**Here's an example below...**Let's suppose someone has a birthdate of August 22, 1964.

So we want to use the format of

**month/day/year**so this birthdate would be

**08/22/64**.

*Notice we only used two digits for the year*.

- 18 + 8 = 26
- 26 x 25 = 650
- 650 - 333 = 317
- 317 x 8 = 2536
- 2536 - 554 = 1982
- 1982 / 2 = 991
- 991 + 22 = 1013
- 1013 x 5 = 5065
- 5065 + 692 = 5757
- 5757 x 20 = 115140
- 115140 + 64 = 115204
- 1295204 - 32940 = 82264

**8 22 64**which is the same as

**August 22nd, 1964**!

*Thank you to http://www.learn-with-math-games.com/birthday-math-trick.html for sharing this awesome trick!*