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## PowerPoint Slideshow about ' Meters, Grams and Liters' - lucas-haynes

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### To change from a larger unit to a smaller unit, you need to multiply.

### To change from smaller units to larger units you divide by a power of ten.

Meters, Grams and Liters

The Metric System

- The metric system is a measurement system based on our decimal (base 10) number system.
- Other countries and all scientists and engineers use the metric system for measurement.

Metric Prefixes

- Metric Units
- The metric system has prefix modifiers that are multiples of 10.

Meters

- Meters measure length or distance
- One millimeter is about the thickness of a dime.

Meters

- A meter is about the width of a doorway

Meters

- A kilometer is about six city blocks or 10 football fields.
- 1.6 kilometers is about 1 mile

Gram

- Grams are used to measure mass or the weight of an object.

Grams

- A milligram weighs about as much as a grain of salt.

Grams

- 1 gram weighs about as much as a small paper clip.
- 1 kilogram weighs about as much as 6 apples or 2 pounds.

Liter

- 1 milliliter is about the amount of one drop

Liter

- 1 liter is half of a 2 liter bottle of Coke or other soda

Which unit would you use to measure the length of this bicycle?

km m cm mm

Which unit would you use to measure the water in an aquarium?

L m cL mg

Which unit would you use to measure the mass of a student desk?

kg g cL mg

Which unit would you use to measure the mass of a whole watermelon?

kg g cL mg

Which unit would you use to measure the distance across Kansas?

km m cm mL

Which unit would you use to measure the length of a bracelet?

km m cm mm

Changing Metric Units

- To change from one unit to another in the metric system you simply multiply or divide by a power of 10.

1 km x 1000 = 1000 m

1 m x 100 = 100 cm

1 cm x 10 = 10mm

Place Values of Metric Prefixes

Movethe decimal point to the right to multiply.

1000mm ÷ 10 = 100cm

100cm ÷ 10 = 10dm

10dm ÷ 10 = 1m

Place Values of Metric Prefixes

Movethe decimal point to the left to divide.

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