Length Study Guide

What is Length?

Length is the measurement of how long an object is from one end to the other. It is a fundamental concept in geometry and is often measured in units such as inches, feet, meters, or centimeters.

Units of Length

There are several units used to measure length:

• Inches: A small unit of length often used for measuring smaller objects.
• Feet: A larger unit of length often used for measuring height or distance.
• Meters: The standard unit of length in the metric system, used in many countries around the world.
• Centimeters: A smaller unit of length used in the metric system, often for more precise measurements.

Measuring Length

Length can be measured using tools such as rulers, tape measures, or meter sticks. When measuring, it's important to align the starting point of the object with the 0 mark on the measuring tool and then read the measurement at the end of the object.

Converting Length Units

It's often necessary to convert between different units of length. Here are some common conversion factors:

• 1 foot = 12 inches
• 1 meter = 100 centimeters
• 1 yard = 3 feet

Practice Problems

1. Convert 5 feet to inches.

Answer: 5 feet * 12 inches/foot = 60 inches

2. If a pencil is 15 centimeters long, how many millimeters is it?

Answer: 15 centimeters * 10 millimeters/centimeter = 150 millimeters

3. A rope is 8 yards long. How many feet is this?

Answer: 8 yards * 3 feet/yard = 24 feet

[Length] Related Worksheets and Study Guides:

• The Pythagorean TheoremMathematics • Seventh Grade
• Measuring LengthMathematics • Kindergarten