Lesson 10: Convert Measurement Units6.AT.3c

I can…

I can convert measurement units using ratios and conversion factors.

Key words

• Convert Measurement Units — Say a measure in a different unit. The amount stays the same.
• Conversion Factor — A ratio you use to change units.
• Unit — An amount used to measure, like an inch or a liter.
• Equivalent — The same value shown in a new way.
• Ratio — A way to compare two amounts, like 3 to 2.
• Customary units — Units like inches, feet, and pounds.
• Metric units — Units like meters, liters, and grams.
• Ratio table — A table that lists equal ratios.

Steps

1. The cabinet is 5 feet tall. I want to know how many inches that is.
2. My conversion factor is 1 foot = 12 inches.
3. Inches are smaller than feet, so I multiply: 5 × 12 = 60.
4. So 5 feet = 60 inches.

Try it

In the table, use the conversion factor to fill in each converted measurement.

Check your answer

Check with your guided notes.

Sentence starter

I know ___ because ___.

Goal: I can explain my conversion using the words conversion factor, unit, equivalent, and ratio.