## How to Quickly Calculate Percentages

How to calculate percentages is easier than you think. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head.

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How to calculate percentages is easier than you think. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head.

January 11, 2017 — Math Dude Jason Marshall

Do you know what it is that a light-year actually measures? Do you know why so many people find it confusing? And why they really shouldn’t?

December 3, 2016 — Math Dude Jason Marshall

Learn how to use statistics to understand the significance of the latest political polling results and to keep yourself from being duped by misleading information

October 26, 2016 — Math Dude Jason Marshall

What are half-lives? And what do they have to do with measuring the age of the solar system and predicting the effects of a morning cup of coffee? Keep on reading to find out!

August 17, 2016 — Math Dude Jason Marshall

Have you ever wondered how people figured out their latitude back in the days before the Internet? Did you know you can use the same math trick they used to pinpoint your latitude today? Keep on reading to find out how it works

May 25, 2016 — Math Dude Jason Marshall

What do you get when you put a real and an imaginary number together? A complex number. No, not a complicated number (although it is kind of complicated). We’re talking about an entirely new set of numbers dubbed “complex”

March 16, 2016 — Math Dude Jason Marshall

Do you know what a limit is in math? Do you know how to define a circle using this idea? And do you know why you might want to? Keep on reading to find out!

February 17, 2016 — Math Dude Jason Marshall

Do you know that math can help you survive? I’m not talking about jobs, money, and feeding yourself—I mean the lost in the wilderness, life depends on it kind of surviving. How does this work? Keep on reading The Math Dude to find out

October 14, 2015 — Math Dude Jason Marshall

How can you measure time without using a stopwatch? You could use the movement of the sun across the sky, watch a pendulum swing or burn some very special string. Keep on reading to find out how it works!

September 16, 2015 — Math Dude Jason Marshall

What are the odds of successfully flying through an asteroid field like the one in *The Empire Strikes Back*? Are they really 3,720 to one as suggested by C-3PO? Or are they much worse…or perhaps better? Keep on reading to find out

August 5, 2015 — Math Dude Jason Marshall

Ever heard of the Monty Hall problem? If so, did the world famous brain teaser leave you flummoxed? If not, how does getting flummoxed—and then just as quickly un-flummoxed—sound? Hopefully you're up for the challenge (and the fun) because that's exactly what's in store for today!

June 24, 2015 — Math Dude Jason Marshall

What's the most important holiday in May? Obviously it's Mother's Day. But did you know there's an equation that can help you celebrate Mom? Keep on reading to find out what it is!

May 6, 2015 — Math Dude Jason Marshall

How is rainfall measured? What does it mean when it rains an inch? And how many gallons of water fall on your roof in a storm? Keep on reading to learn all about the math behind April showers and May flowers

April 8, 2015 — Math Dude Jason Marshall

Want to amaze your friends at that Super Bowl party you're going to? All you have to do is hit 'em with some Super Bowl math fun facts. Keep on reading to learn what they are!

January 28, 2015 — Math Dude Jason Marshall

How many different New Year's Eve countdowns are there around the world? When do astronauts celebrate New Year's? Who celebrates first? And last? Keep on reading to learn all about these New Year's math fun facts

December 31, 2014 — Math Dude Jason Marshall

What are the chances that two players on the same soccer team share a birthday? How about two students in the same algebra class? Both seem pretty unlikely, right? The answer might surprise you!

October 1, 2014 — Math Dude Jason Marshall

The number 9 is kind of amazing. How amazing? Keep on reading for the exciting conclusion to Math Dude's story about the magical number 9

July 9, 2014 — Math Dude Jason Marshall

Have you ever noticed that the number 9 is kind of amazing? What's that…did I hear you say "NO?" Then prepare yourself to be amazed and keep on reading to learn all about the magic behind the mysterious number 9

July 2, 2014 — Math Dude Jason Marshall

Think of a number, add 3, double it, now subtract 4, divide by 2, and finally subtract your original number from the result. You get 1, right? How do I know? And what are some other fun math tricks that you can use to amaze your friends? Keep on reading to find out

June 18, 2014 — Math Dude Jason Marshall

How do you turn a bunch of data into a super-handy graph? Keep on reading to learn the final 2 steps in Math Dude's easy 4-step method for making graphs

May 14, 2014 — Math Dude Jason Marshall