
The Magic of Number 9 (Part 2)
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
Jason Marshall, PhD, is a research scientist, author of The Math Dude's Quick and Dirty Guide to Algebra, and host of the Math Dude podcast on Quick and Dirty Tips.

The Magic of Number 9 (Part 2)
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

The Magic of Number 9 (Part 1)
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

3 Frequently Asked Questions About Math Puzzles
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

How to Make a Graph (Part 2)
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

How to Make a Graph (Part 1)
What are graphs? When are they useful? And how do you make one? Keep on reading to learn an easy 4-step method for making graphs.

3 Frequently Asked Questions about Percentages
The Math Dude: Quick & Dirty Tips to Make Math Simpler

5 Tips for Faster Mental Division (Part 2)
The Math Dude: Quick & Dirty Tips to Make Math Simpler

5 Tips for Faster Mental Division (Part 1)
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Calculate with Significant Figures
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Round Numbers (Part 2)
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Round Numbers (Part 1)
The Math Dude: Quick & Dirty Tips to Make Math Simpler

What Are Significant Figures?
The Math Dude: Quick & Dirty Tips to Make Math Simpler

5 Tips for Faster Mental Multiplication
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Square Numbers Quickly
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Add and Subtract Roman Numerals
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Work with Roman Numerals
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Quickly Add the Integers from 1 to N
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Quickly Add the Integers from 1 to 100
The Math Dude: Quick & Dirty Tips to Make Math Simpler

What Is Pascal's Triangle?, Part 2
The Math Dude: Quick & Dirty Tips to Make Math Simpler

What Is Pascal's Triangle?, Part 1
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Use Statistics to Understand Poll Results
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Add and Subtract Like an Egyptian
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Amaze Your Friends with Number Tricks
The Math Dude: Quick & Dirty Tips to Make Math Simpler

How to Quickly Calculate Percentages
The Math Dude: Quick & Dirty Tips to Make Math Simpler