1. METRIC MASS

2. The unit used to weigh objects in the Metric System is based on the kilogram. The unit used to weigh objects in the Metric System is based on the kilogram. The most commonly used units are the kilogram, the gram, and the milligram The most commonly used units are the kilogram, the gram, and the milligram

3. 1 gram (g) = 1000 milligrams (mg) 1 gram (g) = 1000 milligrams (mg) 1 kilogram (kg) = 1000 grams (g) 1 kilogram (kg) = 1000 grams (g) How many milligrams are in a kilogram? How many milligrams are in a kilogram?

4. References for a gram A gram can be equal to a: A gram can be equal to a:  Pen cap on a plastic Bic pen  Raisin  Raisin  Single Smartie candy  Single Smartie candy A brand new US nickel will have a mass of 5 grams A brand new US nickel will have a mass of 5 grams

5. Scientific Notation There can be some BIG or small numbers used in the metric system, so to save space, you can use scientific notation There can be some BIG or small numbers used in the metric system, so to save space, you can use scientific notation

6. Example A tennis shoe has a mass of 963 grams. In milligrams, it is 963,000 mg, so in scientific notation we would write it as: 9.63 x 10 5 mg

7. Using the same shoe, how many kilograms does it weigh?.963 kg In scientific notation, it would be written: 9.63 x 10 -1 kg

8. Triple beam balance Triple beam balance Click the link above to practice. Click the link above to practice.