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Published byAntonia Gaines Modified over 4 years ago

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DO NOW! What do you know about mass and weight? Complete the chart on the top of the front page of your notes packet.

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The International System of Units (The Metric System)

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Review Metric system is based on powers of 10 Standard units in the metric system are meter, liter, gram Prefixes kilo hectodeca meter liter gram deci centimilli

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The two methods of converting between units within the metric system include the ladder method (moving decimal place), and using conversion factors.

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KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit CENTI 0.01 Unit MILLI 0.001 Unit Meters Liters Grams Ladder Method How do you use the “ladder” method? 1 st – Determine your starting point. 2 nd – Count the “jumps” to your ending point. 3 rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m 1 2 3 How many jumps does it take? Starting Point Ending Point 4. 1 __. 2 3 = 4000 m Standard

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The Conversion Factor Method The following are common metric system equations that can be used as conversion factors to cancel out units. 1 m = 100 cm 1000 mL = 1 L 1 kg = 1000 g 1 g = 1000 mg

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Example: Using Conversion Factors How many milliliters are in 15.67 L of water? Given: 15.67 L of water Needed: mL of water 1000 1

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