1. IMPERIAL V. METRIC

2. Which weighs more? 1 oz. of feathers 1 oz. of gold OR

3. TWO SYSTEMS Imperial Feet, gallons, Fahrenheit, pounds Metric Meters, liters, Celsius, grams

4. METRIC SYSTEM Built on Base 10 = Easy calculations Standard prefixes Countries who use metric: Albania, Algeria, Andorra, Angola, Argentina, Armenia, Australia, Austria, Barbados, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia, Botswana, Brazil, Brunei, Bulgaria, Burma, Cambodia, Cameroon, Canada, Chad, Chile, China, Columbia, Congo, Croatia, Cuba, Czech Republic, Denmark, Ecuador, Egypt, El Salvador, Estonia, Ethiopia, Finland, France, Georgia, Germany, Ghana, Greece, Guatemala, Guinea, Guyana, Haiti, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kenya, Korea, Laos, Latvia, Lebanon, Liberia, Libya, Lithuania, Luxembourg, Macedonia, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Moldova, Mongolia, Montenegro, Morocco, Mozambique, Namibia, Nepal, Netherlands, New Zealand, Nicaragua, Norway, Oman, Pakistan, Palestine, Panama, Paraguay, Peru, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Samoa, Senegal, Serbia, Sierra Leone, Singapore, Slovakia, Slovenia, Somalia, South Africa, Spain, Sri Lanka, Sudan, Swaziland, Sweden, Switzerland, Syria, Tanzania, Thailand, Tonga, Tunisia, Turkey, Uganda, Ukraine, United kingdom, Uruguay, etc.

5. The base units for measurement include: m = meter for length g = gram for mass s = second for time L = liter for volume

6. IMPERIAL SYSTEM No standard base = Complicated calculations No prefixes Countries who use Imperial: United States, Liberia, Burma

9. CONVERSIONS 1. How many inches in 7.2 feet? 7.2 ft x 12 inches = 1 ft 86.4 inches The key is to cancel units!

10. Why should I learn the metric system? -Scientist-Pharmacist-Business -Engineer-Travel-Mechanic -Military-Nurse-Doctor -Manufacturing

11. METRIC UNITS prefixkilohectodeka Base unit decicentimilli Abb.khdk____dcm Value10001001010.10.010.001 Metric value chart for measurements Examples: 1 kilometer = 1000 meters 1 dekagram = 10 grams 1 millisecond = 0.001 second

12. CONVERSIONS How many millimeters in 3.4 meters? Our table states that: 1 mm = 0.001 m 3.4 m x 1mm = 0.001m The key is to cancel units! 3,400 mm

13. Attempt the following conversions on your paper: A. 27.3 kilometers = ? Meters B. 15.9 decagrams = ? Grams C. 19.2 deciseconds = ? Seconds D. 53.8 milliliters = ? Liters

14. What about multistep problems? How many millimeters are in 13 kilometers? 13 km x 1000 m x 1 mm = 1 km.001 m To solve multistep problems we use multiple ratios. Always convert to the base unit first! 13,000,000 mm

15. Attempt the following conversions on your paper: A. 25 decimeters to hectometers B. 1000 kilometers to centimeters C. 37 dekaliters to deciliters D. 1800 milliseconds to deciseconds

16. SCIENTIFIC NOTATION

20. So, which weighs more? 28 g 31.1g OR An ounce is usually the international avoirdupois ounce as used in the United States, which is equal to one-sixteenth of a pound or approximately 28 grams; however, other definitions of ounce (most important, the international troy ounce) are used in a number of different measurement systems.