Metric mixed units

Key Notes :

Definition of Metric Units:

• The metric system uses units like millimeters (mm), centimeters (cm), meters (m), and kilometers (km) for measuring length; grams (g) and kilograms (kg) for weight; and liters (L) for volume.

Understanding Mixed Units:

• Mixed units refer to measurements that combine different units. For example, 3 meters 45 centimeters (3 m 45 cm) or 2 kilograms 300 grams (2 kg 300 g).

Converting Between Units:

• Length: 1000 millimeters (mm) = 1 meter (m), 100 centimeters (cm) = 1 meter (m), 1000 meters (m) = 1 kilometer (km).
• Weight: 1000 grams (g) = 1 kilogram (kg).
• Volume: 1000 milliliters (ml) = 1 liter (L).

Adding and Subtracting Mixed Units:

• When adding or subtracting mixed units, first convert all measurements to the same unit before performing the operation. For example, to add 3 meters 50 centimeters and 2 meters 75 centimeters, convert centimeters to meters or vice versa.

Practice with Word Problems:

• Create word problems where students must convert and add or subtract mixed units, such as “Sarah has 4 meters 30 centimeters of ribbon, and she buys another 2 meters 80 centimeters. How much ribbon does she have in total?”

Real-life Applications:

• Show how mixed units are used in real life, such as measuring the height of a person (in meters and centimeters), weighing ingredients (in kilograms and grams), or measuring liquids (in liters and milliliters).

Learn with an example

let’s practice!