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Lesson 5: Converting US Customary units word problems

# Converting units of measurement: FAQ

## What are some of the main forms of measurement?

We can categorize measurement into three categories:
• Weight/mass: grams, kilograms, ounces, pounds
• Volume: milliliters, liters, cups, pints, quarts, gallons
• Length/distance: millimeters, centimeters, meters, kilometers, inches, feet, yards, miles

## How do we convert metric units?

To convert metric units, we use the prefixes: kilo-, hecto-, deka-, deci-, centi-, and milli-. Each prefix corresponds to a certain power of ten. For example, $1$ kilometer (km) is equal to $1,000$ meters (m), and $1$ centimeter (cm) is equal to $0.01$ meters (m).
Try it yourself with this exercise:

## How do we convert US customary units?

To convert US customary units, we need to know the relationships between the different units. For example, there are $12$ inches in $1$ foot, $3$ feet in $1$ yard, and $16$ ounces in $1$ pound.
Try it yourself with this exercise:

## What are some common mistakes people make when converting units?

Some common mistakes people make when converting units include not knowing the relationships between the different units, not using the correct conversion factor, and not keeping track of the units throughout the calculation.

## What are some real-world applications of unit conversions?

Unit conversions are used in a wide variety of fields, such as science, engineering, manufacturing, and cooking. For example, when working with measurements in a lab, scientists often need to convert between metric and US customary units. And when cooking, we might need to convert a recipe from cups to milliliters in order to use the correct proportions.
Try it yourself with these exercises:

## Want to join the conversation?

• Do you know why the US didn't just use other measurements like the rest of the world?
• The biggest reasons the U.S. hasn't adopted the metric system are simply time and money. When the Industrial Revolution began in the country, expensive manufacturing plants became the primary source of American jobs and consumer products.
• US.Customary units are like feet, inches, miles, yards and others. (I am kind of bad at math.)
• I kind of don't know what I am doing
• not so hard and not so easy!11
• Why is this so hard to just do one questing.
• I dont know
• Thank you so much for breaking it down for me I really had a hard time with this!