Understanding Units

Units are used to measure and quantify different attributes, such as length, weight, volume, time, and more. They provide a standard for comparing and expressing the magnitude of a particular attribute. For example, when measuring length, we can use units like inches, feet, meters, or kilometers. Similarly, for weight, we can use units like grams, kilograms, or pounds.

Common Units of Measurement

Here are some common units of measurement for different attributes:

Length:

• Centimeter (cm)
• Meter (m)
• Kilometer (km)

Weight:

• Gram (g)
• Kilogram (kg)
• Pound (lb)

Volume:

• Liter (L)
• Milliliter (mL)
• Cubic Meter (m³)

Time:

• Second (s)
• Minute (min)
• Hour (hr)

Converting Units

It's important to be able to convert between different units of measurement. Here are some common conversion factors:

Length:

1 meter (m) = 100 centimeters (cm)

1 kilometer (km) = 1000 meters (m)

Weight:

1 kilogram (kg) = 1000 grams (g)

1 pound (lb) = 16 ounces (oz)

Volume:

1 liter (L) = 1000 milliliters (mL)

Study Guide

Here are some key points to remember about units:

1. Units are used to measure and quantify different attributes.
2. Common units of measurement include length, weight, volume, and time.
3. It's important to be able to convert between different units of measurement using conversion factors.
4. Practice using units and conversion factors to reinforce your understanding.