O'Reilly logo

Basic Math and Pre-Algebra For Dummies, 2nd Edition by Mark Zegarelli

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 15

How Much Have You Got? Weights and Measures

In This Chapter

arrow Using units for non-discrete measurement

arrow Discovering differences between the English and metric systems

arrow Estimating and calculating English and metric system conversions

In Chapter 4, I introduce you to units, which are items that can be counted, such as apples, coins, or hats. Apples, coins, and hats are easy to count because they're discrete — that is, you can easily see where one ends and the next one begins. But not everything is so easy. For example, how do you count water — by the drop? Even if you tried, exactly how big is a drop?

Units of measurement come in handy at this point. A unit of measurement allows you to count something that isn't discrete: an amount of a liquid or solid, the distance from one place to another, a length of time, the speed at which you're traveling, or the temperature of the air.

In this chapter, I discuss two important systems of measurement: English and metric. You're probably familiar with the English system already, and you may know more than you think about the metric system. Each of these measurement systems provides a different way to measure distance, volume, weight (or ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required