How many? Temperature When Inches in a foot? Teaspoons in a table spoon Feet in a yard? Tablespoons in a cup Yards in a mile? Ounces in a cup Miles in a nautical mile? Cups in a pint Ounces in a pound? Pints in a quart Pounds in a ton? Quarts in a gallon Temperature When Water boils? Water freezes?

Why science ALWAYS uses metric Two different groups of scientists were working on the calculations to send a probe to Mars. The American team did their calculations in the English standard and the other team did it in the metric system (OOPS!) It cost the space program 125 million dollars It cost the scientists their time

The Metric System The metric system is an internationally standardized system of units of measurement. The metric system is based on a base unit and prefixes.

Prefixes Kilo - 1000 k Hecto - 100 h Deca - 10 da none 1 none Deci - 0.1 d Centi - 0.01 c Milli - 0.001 m

Base Units Length: Meter Mass: Gram Volume: Liter Time: Second (DOES NOT USE PREFIXES!)

Length Metric Units of Length Kilometer (km) = 1000 m Hectometer (hm) = 100 m Decameter (dam) = 10 m Meter (m) = 1 m Decimeter (dm) = 0.1 m Centimeter (cm) = 0.01 m Millimeter (mm) = 0.001 m

Mass Metric Units of Mass Kilogram (kg) = 1000 g Hectogram (hg) = 100 g Decagram (dag) = 10 g Gram (g) = 1 g Decigram (dg) = 0.1 g Centigram (cg) = 0.01 g Milligram (mg) = 0.001 g

Volume Metric Units of Capacity Kiloliter (kL) = 1000 L Hectoliter (hL) = 100 L Decaliter (daL) = 10 L Liter (L) = 1 L Deciliter (dL) = 0.1 L Centiliter (cL) = 0.01 L Milliliter (mL) = 0.001 L

Conversions within the Metric System To convert units within the metric system, write the prefixes in order from largest to smallest k h da d c m To convert from a smaller unit to a larger unit, move to the left To convert from a larger unit to a smaller unit, move to the right

Ex: Convert 1600 cm to m km hm dam m dm cm mm Move 2 places to the left to get from cm to m Therefore, move the decimal point in 1600 two places to the left to convert from cm to m 1600 cm = 16.00 m

Ex: Convert 2 kL to L kL hL daL L dL cL mL Move 3 places to the right to get from kL to L Therefore, move the decimal point in 2 three places to the right to convert from kL to L 2 KL = 2000 L

Ex: Convert 45 cm to km km hm dam m dm cm mm Move 5 places to the left to get from cm to km Therefore, move the decimal point in 45 five places to the left to convert from cm to km 45 cm = 0.00045 km