How to Use Mathematical Series in the Real World

Learn how mathematical series and the compound interest formula can be used in the real world to calculate how fast money grows in recurring investments.

Jason Marshall, PhD
5-minute read
Episode #67

Number of the Week

Before we finish up, it’s time for this week’s featured number selected from the various numbers of the day posted to the Math Dude’s Facebook page. This week’s number is 10^22…that is, a 1 with 22 zeros after it. What could a number that big possibly be? Well, it’s an estimate of the number of grains of sand on all the beaches of the world. While that’s a huge number, what’s even more incredible is that the new system for assigning addresses to Internet devices that was tested last week contains enough addresses to assign one to each of those 10^22 grains of sand on Earth…300 trillion times! So, I think we’re all set for Internet addresses for a while.

For the bonus tip, click here

New FREE Math Dude E-book!

Have you heard the news? My new e-book, Why Math Isn’t an Awful Nerd, is available for download for FREE right now from Amazon, Barnes & Noble, and the iBookstore. What’s it about? Well, the title really says it all: A lot of people have had bad experiences with math, and they feel like it’s just a painful and awful subject. I understand where they’re coming from, but I also know that it really doesn’t have to be that way. So, using lots of visual explanations, puzzles, and games, this new ebook explains step-by-step exactly how math works, why it’s so awesome, and hopefully it’ll convince all those people thinking that math is awful to change their minds and agree with me that math is—dare I say it—elegant and even beautiful. Be sure to download your copy of Why Math Isn’t an Awful Nerd today! Thanks!

Wrap Up

Okay, that’s all for today. Remember to become a fan of the Math Dude on Facebook where you’ll find a new number of the day and math puzzle posted each and every weekday. And if you’re on Twitter, please follow me there too. Finally, if you have math questions, feel free to send them my way via Facebook, Twitter, or by email at mathdude@quickanddirtytips.com.

Until next time, this is Jason Marshall with The Math Dude’s Quick and Dirty Tips to Make Math Easier. Thanks for reading, math fans! 

Dollar Sign image courtesy of Shutterstock


About the Author

Jason Marshall, PhD

Jason Marshall is the author of The Math Dude's Quick and Dirty Guide to Algebra. He provides clear explanations of math terms and principles, and his simple tricks for solving basic algebra problems will have even the most math-phobic person looking forward to working out whatever math problem comes their way.