U.S. Customary System
Learn the U.S. Customary measurement system in Grade 6 math, converting between inches, feet, yards, and miles using multiplication and division to solve real-world measurement problems.
Key Concepts
Property The U.S. Customary System is a system of measurement that includes units like inches (in.), feet (ft), yards (yd), and miles (mi).
Examples The length of your textbook is best measured in inches.
The height of a classroom door is best measured in feet.
Common Questions
What are the basic units of length in the U.S. Customary System?
The main units are inches, feet, yards, and miles. There are 12 inches in 1 foot, 3 feet in 1 yard, and 5280 feet in 1 mile. Each unit is used for a different size range of measurements.
How do you convert feet to inches?
Multiply the number of feet by 12 because there are 12 inches in every foot. For example, 5 feet times 12 equals 60 inches. Going from a larger unit to a smaller unit always means multiplying.
When should students use inches versus feet versus miles?
Use inches for small objects like a pencil or key. Use feet for room dimensions or a person's height. Use miles for long distances like driving between cities.
What is a common mistake when converting between customary units?
Students often divide when they should multiply. Remember: converting from a larger unit to a smaller unit means MORE of them, so you multiply. Converting from a smaller to a larger unit means you divide.