# Introduction to Systems of Measurement

## What you'll learn to do: Make conversions between units in the U.S. and Metric systems of measurement

Most countries use the metric system, while to United States uses their own way of measuring. In the U.S., distances are measured in miles, so when traveling to a foreign country, we cannot always understand the kilometer measurements. Because you are traveling from the U.S., you want to be able to convert kilometers to miles so you will be able to better navigate for yourself. This chapter will focus on unit conversions from the U.S. system to the metric system, as well as Fahrenheit to Celsius. Before you get started in this module, try a few practice problems and review prior concepts.### readiness quiz

1) [ohm_question]146599[/ohm_question] If you missed this problem, review this video. https://youtu.be/JFAwf01nPG8 2) [ohm_question]146014[/ohm_question] If you missed this problem, review the following video. https://youtu.be/_2Wk7jXf3Ok 3) [ohm_question]146021[/ohm_question] If you missed this problem, review the video below. https://youtu.be/f_L-EFC8Z7c## Contribute!

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## Licenses & Attributions

### CC licensed content, Original

- Multiply Decimals by 10, 100, and 1000.
**Authored by:**James Sousa (Mathispower4u.com) for Lumen Learning.**License:**Public Domain: No Known Copyright.

### CC licensed content, Shared previously

- Foreign Road Sign.
**Authored by:**Ramon F Velasquez.**Located at:**https://commons.wikimedia.org/wiki/File:Lemery,Batangasjf4328_04.JPG.**License:**CC BY-SA: Attribution-ShareAlike. - Ex 1: Simplify Fractions.
**Authored by:**James Sousa (Mathispower4u.com).**License:**CC BY: Attribution. - Ex 1: Multiply Fractions (Basic).
**Authored by:**James Sousa (Mathispower4u.com).**License:**CC BY: Attribution. - Question ID: 146014, 146021, 146599.
**Authored by:**Lumen Learning.**License:**CC BY: Attribution.**License terms:**IMathAS Community License CC-BY + GPL.

### CC licensed content, Specific attribution

- Prealgebra.
**Provided by:**OpenStax**License:**CC BY: Attribution.**License terms:**Download for free at http://cnx.org/contents/[email protected].