Polygon Characteristics -> units

Units

In mathematics, units refer to the standard measurements used to quantify different attributes such as length, mass, volume, time, and more. Units help us quantify and compare different quantities in a standardized way.

Common Units:

1. Length:

• Standard unit: meter (m)
• Other units: centimeter (cm), kilometer (km), foot (ft), inch (in), yard (yd)

2. Mass:

• Standard unit: gram (g) or kilogram (kg)
• Other units: milligram (mg), ounce (oz), pound (lb)

3. Volume:

• Standard unit: liter (L)
• Other units: milliliter (mL), cubic meter (m³), gallon (gal), quart (qt)

4. Time:

• Standard unit: second (s)
• Other units: minute (min), hour (hr), day (d), week (wk)

Converting Units:

Converting between units involves multiplying or dividing by conversion factors. Here are some common conversion factors:

1 meter (m) = 100 centimeters (cm)

1 kilogram (kg) = 1000 grams (g)

1 liter (L) = 1000 milliliters (mL)

1 hour (hr) = 60 minutes (min)

Practice Problems:

1. Convert 3.5 meters to centimeters.

2. Convert 4500 grams to kilograms.

3. Convert 2.75 liters to milliliters.

4. Convert 2.5 hours to minutes.

5. Convert 5.25 kilometers to meters.

Summary:

Units are essential in mathematics for measuring and comparing different quantities. Understanding units and being able to convert between them is important for solving various mathematical problems.