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What Are Imaginary Numbers?
science.howstuffworks.com/math-concepts/imaginary-numbers.htm
An imaginary number is a value that's the square root of a negative number. It can't exist on a one-dimensional number line. We'll explain.
How to Convert Kilograms to Pounds
science.howstuffworks.com/math-concepts/how-to-convert-kilograms-to-pounds.htm
Converting kilogram measurements into pounds is not hard. We'll show you the textbook way plus two quick-and-dirty shortcuts.
The Mental Math Quiz
play.howstuffworks.com/quiz/the-mental-math-quiz
If you love math and calculating numbers in your head, you'll love taking this mental math quiz! With 35 math questions that consist of square roots, division, multiplication, word problems and more, we're putting your math skills to the test!
What Is the Area Formula for a Rectangle, a Triangle and a Circle?
science.howstuffworks.com/math-concepts/area-formula.htm
Want to know the area of your pizza or the kitchen you're eating it in? Come on, and we'll show you how to figure it out with an area formula.
How Brakes Work
auto.howstuffworks.com/auto-parts/brakes/brake-types/brake.htm
Brakes translate a push of a pedal to slowing down your car - but how? Learn how brakes work, about the physics of braking and see a simple brake system.
How to Divide Fractions
science.howstuffworks.com/math-concepts/how-to-divide-fractions.htm
Dividing fractions is easy once you learn a couple of rules and remember three words - keep, change and flip.
Recipe Tips
recipes.howstuffworks.com/tools-and-techniques/recipe-tips.htm
These recipe tips give details on adjusting quantities of ingredients to feed larger or smaller crowds. Healthy snack recipe tips are also provided.
PEMDAS: Remembering Math's Order of Operations
science.howstuffworks.com/math-concepts/PEMDAS.htm
A simple math problem may seem to some of us like an inscrutable pile of numbers and symbols, just waiting to trip us up. PEMDAS to the rescue!
How do I calculate the percentage of calories from fat?
Calculating the calories from fat can be good for a diet. Learn more about calculating the calories from fat at Discovery Health.
What's an Easy Way to Convert Meters to Feet?
science.howstuffworks.com/math-concepts/meters-to-feet.htm
Most of the world uses meters, apart from the U.S. and a few other countries. So what's an easy way to convert from meters to feet and vice versa?