If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Donate Login Sign up Search for courses, skills, and videos. Math 5th grade Wavin revit families units of measure Converting metric units.

Converting units: metric distance. Converting units: centimeters to meters. Practice: Convert units metrics. Metric units of mass review g and kg. Metric units of volume review L and mL. Next lesson. Current timeTotal duration Math: 5.

Google Classroom Facebook Twitter. Video transcript We're asked to arrange the following measurements in order from smallest to largest. And we have the measurements, and they're different units.

This is in decameters, then we have meters, then we have millimeters, then we have centimeters. So the way I would tackle this is I would try to convert them all to the same units, maybe meters, and then compare them all in terms of meters. So let's do that. So this is just a screenshot of that exact same screen we just saw there. And so let's just convert each of these into meters. So the first one we have right over here is one decameter. So we have to remind ourselves what deca even means.You need more practice to master units, conversions, and significant figures.

One way to learn the material is to work your way through the units and measurement study guide. You might also want to review how to cancel units.

The best way to improve your skills is to practice working problems. Ready for another quiz? See if you can recognize safety symbols used in science labs. Want to relax and take a quiz just for fun? See which chemical element suits your personality the best. Good job! You missed a few questions, but with a bit more practice, you'll be converting units and working significant figure problems like a pro. A good way to review is to work your way through the units and measurement study guide.

Great work! You did well on the units and conversions quiz. If you have trouble with any specific types of problems, try looking at a worked example problem to review the concepts and see how to proceed. Remember to check your work to make sure an answer makes sense.

You don't want to miss an answer from being careless! Are you up for another quiz? See if you know all the answers in the 20 Questions chemistry quiz. If you'd like to try something completely different, see if you understand the science of how fireworks work.

Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels.

Facebook Facebook Twitter Twitter. The number If a can of soup contains What is the metric unit for volume? A sample contains mg of mercury. How many significant figures are in the number? The conversion factors from meter to centimeters are:. A length of glass tubing is 0. How many inches long is the tubing?

The liquid's specific gravity is. If a sample has a specific gravity of 1.Track My Order. Frequently Asked Questions.

International Shipping Info. Send Email. Mon-Fri, 9am to 12pm and 1pm to 5pm U. Mountain Time:. Chat With Us. Metric Prefixes are incredibly useful for describing quantities of the International System of Units SI in a more succinct manner.

When exploring the world of electronics, these units of measurement are very important and allow people from all over the world to communicate and share their work and discoveries.

Some common units used in electronics include voltage for electrical potential difference, ampere for electrical current, watts for power, farad for capacitance, henry's for inductance, and ohms for resistance. This tutorial will not only go over some of the most commonly used units in electronics but will also teach you the metric prefixes that help describe all of these base units in quantities ranging from the insanely large to the incredibly small.

## Metric SI Unit Conversions

If you would like to know more about the components that use the units and prefixes described in this tutorial, check out some of these related tutorials.

We've been measuring stuff for millennia, and our units used for those measures have been evolving since then. There are now dozens of units to describe physical quantities. For example, length can be measured by the foot, meter, fathom, chain, parsec, league, and so on. In order to better communicate measurements, we needed a standardized system of units, which every scientist and measurer could use to share their findings.

Using the units above means everyone is speaking the same language. In dealing with electronics, there are a handful of units we'll be encountering more often than others. These include:. Now that we know the units, let's look at how they can be augmented with prefixes to make them even more usable!

These are what we'll consider the standard six prefixes taught in most High School science courses. However, as you'll soon see, when learning about electronics and computer science, the range of prefixes well exceeds the standard six. While these prefixes cover a rang of 10 -3 to 10 3many electronic values can have a much larger range. These above prefixes dramatically help describe quanities of units in large amounts. Instead of saying 3, Hertz, you can say 3.

This allows us to describe incredibly large numbers of units succinctly. There are also prefixes for helping communicate tiny numbers as well. Now, instead one trillionth of a second, it can be referred to as a picosecond. This allows you to distinguish between the two when they use the same letter.

As an example, one mW milliwatt does not equal one MW megawatt. As you'll see in the Bits and Bytes sectionthere is also some confusion with k and K when dealing with the binary base 2 prefixes. The beautiful thing about these metric prefixes is that, once you get the hang of conversion between a few of them, translating that ability to all the other prefixes is easy.

As a first simple example, lets translate 1 Ampere A into smaller values. A milliampere is 1 thousandth of the unit Ampere hence 1 Ampere is equal to milliamperes.

### Unit Conversions Test Questions

Going further, 1 milliampere is equivalent to microamperes and so on. Going in the opposite direction, 1 Ampere is. Now that's a lot of current!Chapter 1 Chapter 1: The Chemical World 1.

During your studies of chemistry and physics alsoyou will note that mathematical equations are used in many different applications. Many of these equations have a number of different variables with which you will need to work. You should also note that these equations will often require you to use measurements with their units.

Algebra skills become very important here! A conversion factor is a factor used to convert one unit of measurement into another. A simple conversion factor can be used to convert meters into centimeters, or a more complex one can be used to convert miles per hour into meters per second. Since most calculations require measurements to be in certain units, you will find many uses for conversion factors. What always must be remembered is that a conversion factor has to represent a fact; this fact can either be simple or much more complex.

For instance, you already know that 12 eggs equal 1 dozen. They may include:. As long as we perform the same operation on both sides of the equals sign, the expression remains an equality. Look at the right side of the equation; it now has the same quantity in the numerator the top as it has in the denominator the bottom. Any fraction that has the same quantity in the numerator and the denominator has a value of We know that cm is 1 m, so we have the same quantity on the top and the bottom of our fraction, although it is expressed in different units.

Dimensional analysis is amongst the most valuable tools physical scientists use. Simply put, it is the conversion between an amount in one unit to the corresponding amount in a desired unit using various conversion factors. This is valuable because certain measurements are more accurate or easier to find than others. The use of units in a calculation to ensure that we obtain the final proper units is called dimensional analysis. Here is a simple example. How many centimeters are there in 3.

Perhaps you can determine the answer in your head. If there are cm in every meter, then 3. To solve the problem more formally with a conversion factor, we first write the quantity we are given, 3.The worksheets on this page all deal with unit conversions within the metric system. The metric system is a great place to start learning about converting between units because all of the conversions are based around multiples of ten.

I wrote a really great post that introduces all of the concepts necessary for conversions within the metric system here Each metric conversion worksheet deals with conversions within specific classes of measurement for example, length or mass as well as metric conversions between classes, for example linear dimensions meters and area square metersas well as cubic dimensions meters cubed to volume liters. The metric system is a rich playground for developing conversions skills before moving on to the slightly more confusing conversion of customary British measurements or conversions between customary and metric systems with various conversion constants.

Regardless of what sort of conversions you need to figure out, the CalculatorSite. The metric system is used world wide as the standard for measurement. Practice converting units in this system is critical to success in math, science and many other fields of study. The each metric conversion worksheet in this section provide practice converting between a type of metric unit.

The first set of conversion worksheets deals with converting metric units of length. The base unit of distance in the metric system is the meter.

The first set of worksheets focuses on conversions less than a meter, including millimeters to meters and centimeters to meters. Additional sets of worksheets deal with larger metric units, including meters to kilometers, meters to decameters and meters to hectometers.

A complete set of length conversion worksheet practice is also provided that mixes conversion of units larger and smaller than meters, for example conversion of centimeters to kilometers.

The second series of metric conversion worksheets on this page is about conversion of mass units. The gram is the base unit of mass in the metric system. The first set of worksheets focuses on conversions using units that are fractions of a gram, including milligrams to grams and centigrams to grams.

More conversion worksheets then deal with conversion to units larger than a gram, including grams to kilograms, grams to decagrams and the less common but also interesting grams to hectograms.

A complete set of practice mass conversion worksheets includes conversion of units larger and smaller than grams, for example milligrams to kilograms. The final series of metric conversion worksheets on this page is about conversion of metric volume units.

The liter is the base unit of mass in the metric system, consisting of exactly milliliters.Problem 1: Imagine that you are driving your car in Canada. As you're driving along, you notice that the speed limit signs have numbers like on the highway and 50 in the city. Figure out how fast you're allowed to go if the sign says:. See if you can determine solutions to the following problems that geologists face when working with maps.

Your Account. Unit Conversions Practice Problems Jump down to: Density Scale Some simple unit conversion problems If you do not have a list of common conversion factors in your book, you may wish to download and print this sheet of common conversion factors for the geosciences Acrobat PDF 40kB Sep3 If you need a reminder of the steps, you can download and print this worksheet Acrobat PDF 44kB Apr11 08 walking you through the steps for unit conversion.

Finally, you can download a sheet that has all the problems Acrobat PDF 48kB Jul25 09 on it so you can print it out and work them on your own. Show credits.

Show Solution to number 1. Let's do this using the steps you learned in the previous page. Write out the units you have when appropriate as a fraction : Show units. Show units. Show conversion factor s. Since "hours" stays the same on the bottom, you only need one conversion factor: km to mi. Show appropriate arrangement. Since km is in the numerator in the original units, km needs to be in the denominator so that we can cancel:.

Show set-up. Show canceled units. Show multiplication.Discover 15 secret strategies that will raise your score on any multiple choice exam regardless of the subject. Although the metric system using SI units is the standard system of measure in most parts of the world many countries still use at least some of their traditional units of measure. In North America those units come from the old British system.

Below are practice test questions for the metric system similar to what you will find on a standardized test.

It is important to note that in science, the metric units of grams and kilograms are always used to denote the mass of an object rather than its weight. In predominantly metric countries the standard unit of temperature is degrees Celsius while in countries with only limited use of the metric system, such as the United States, degrees Fahrenheit is used. This chart shows the difference between Fahrenheit and Celsius:.

To convert from Celsius to Fahrenheit you need to multiply the temperature in Celsius by 1. First subtract 32 from the temperature then divide by 1. Be careful of Choice A, 0. For the metric conversion do you need to mesmerize the amounts? Most Popular. The complete guide to multiple choice! Test Help! Distance, Volume, Area and Temperature. Distance When measuring distance the relation between metric and standard units looks like this: 0. Area When measuring area the relation between metric and standard looks like this:.

Weight and Mass When measuring weight and mass the relation between metric and standard units looks like this:.

Temperature In predominantly metric countries the standard unit of temperature is degrees Celsius while in countries with only limited use of the metric system, such as the United States, degrees Fahrenheit is used.

Volume Similarly, when measuring volume the relation between metric and standard units looks like this: fl oz 1 milliliter 1 fluid ounce Practice Questions 1.

**Understanding Conversion Factors**

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