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The metric system
- 1. Meters, Grams and Liters
- 2. 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.
- 3. Metric Prefixes • Metric Units • The metric system has prefix modifiers that are multiples of 10. Prefix Symbol Factor Number Factor Word Kilo- k 1000 Thousand Hecto- h 100 Hundred Deca- da or dk 10 Ten Unit m, l, or g 1 One Deci- d .1 Tenth Centi- c .01 Hundredth Milli- m .001 thousandth
- 4. Place Values of Metric Prefixes Thousand Hundred Ten One Tenth Hundredth Thousandth km kg kL hm hg hL dkm dkg dkL m g L dm dg dL cm cg cL mm mg mL
- 5. Meters • Meters measure length or distance • One millimeter is about the thickness of a dime.
- 6. Meters • One centimeter is about the width of a large paper clip •or your fingernail.
- 7. Meters • A meter is about the width of a doorway
- 8. Meters • A kilometer is about six city blocks or 10 football fields. • 1.6 kilometers is about 1 mile
- 9. Gram • Grams are used to measure mass or the weight of an object.
- 10. Grams • A milligram weighs about as much as a grain of salt.
- 11. Grams • 1 gram weighs about as much as a small paper clip. • 1 kilogram weighs about as much as 6 apples or 2 pounds.
- 12. Liters • Liters measure liquids or capacity.
- 13. Liter • 1 milliliter is about the amount of one drop
- 14. Liter • 1 liter is half of a 2 liter bottle of Coke or other soda
- 15. Liter • A kiloliter would be about 500 2-liter bottles of pop
- 17. Which unit would you use to measure the length of this bicycle? km m cm mm
- 18. Which unit would you use to measure the mass of a penny? km g cL mg
- 19. Which unit would you use to measure the water in an aquarium? L m cL mg
- 20. Which unit would you use to measure the mass of a feather? L m cL mg
- 21. Which unit would you use to measure the mass of a student desk? kg g cL mg
- 22. Which unit would you use to measure the mass of a whole watermelon? kg g cL mg
- 23. Which unit would you use to measure the mass of an egg? kg g mm mg
- 24. Which unit would you use to measure a can of soup? kL L mm mL
- 25. Which unit would you use to measure this glass of milk? kL L cL mL
- 26. Which unit would you use to measure the distance across Kansas? km m cm mL
- 27. Which unit would you use to measure the height of a tree? km m cm mm
- 28. Which unit would you use to measure the length of a bracelet? km m cm mm
- 30. Changing Metric Units • To change from one unit to another in the metric system you simply multiply or divide by a power of 10.
- 31. To change from a larger unit to a smaller unit, you need to multiply. 1 km x 1000 = 1000 m 1 m x 100 = 100 cm 1 cm x 10 = 10mm
- 32. Place Values of Metric Prefixes Thousand Hundred Ten One Tenth Hundredth Thousandth km kL kg hm hL hg dkm dkL dkg m L g dm dL dg cm cL cg mm mL mg Move the decimal point to the right to multiply.
- 33. Place Values of Metric Prefixes Thousand Hundred Ten One Tenth Hundredth Thousandth km kg kL hm hg hL dkm dkg dkL m g L dm dg dL cm cg cL mm mg mL
- 34. To change from smaller units to larger units you divide by a power of ten. 1000mm ÷ 10 = 100cm 100cm ÷ 10 = 10dm 10dm ÷ 10 = 1m
- 35. Place Values of Metric Prefixes Thousand Hundred Ten One Tenth Hundredth Thousandth km kL kg hm hL hg dkm dkL dkg m L g dm dL dg cm cL cg mm mL mg Move the decimal point to the left to divide.
- 36. Place Values of Metric Prefixes km kg kL hm hg hL dkm dkg dkL m g L dm dg dL cm cg cL mm mg mL 3km 30hm 300dkm 3000m 4L 30000dm 300000cm 12cm 3000000mm