1. 1

2. 2 The most common metric units of length are:  millimeter  centimeter  meter  kilometer

3. 3 Metric Units of Length  The basic unit of length in the metric system is the meter.  All of the other metric units of length are defined in terms of the meter.

4. 4 UnitSymbolMeaningModel

5. 5 UnitSymbolMeaningModel millimeter centimeter meter kilometer

6. 6 UnitSymbolMeaningModel millimetermm centimeter meter kilometer

7. 7 UnitSymbolMeaningModel millimetermm0.001 m centimeter meter kilometer

8. 8 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimeter meter kilometer

9. 9 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm meter kilometer

10. 10 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 m meter kilometer

11. 11 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meter kilometer

12. 12 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meterm kilometer

13. 13 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meterm1 m kilometer

14. 14 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meterm1 mWidth of a doorway kilometer

15. 15 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meterm1 mWidth of a doorway kilometerkm

16. 16 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meterm1 mWidth of a doorway kilometerkm1000 m

17. 17 UnitSymbolMeaningModel millimetermm0.001 mThickness of a dime centimetercm0.01 mWidth of a large paperclip meterm1 mWidth of a doorway kilometerkm1000 mAbout 2 ½ times around the track

18. 18 Metric Units of Length  1kilometer = 1000 meters  1meter = 100 centimeters  1centimeter = 10 millimeters  1meter = 1000 millimeters

19. 19 Which metric unit of length would be the most appropriate to measure: the distance between cities? km the length of an ant? mm the length of your math book? cm the length of the hallway? m the height of a giraffe? m

20. 20 Metric Units of Length  To change from a large unit to a small unit - multiply Measurement Conversion  To change from a small unit to a large unit - divide

21. 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

22. Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL160 cm = _______ mm 14 km = _______ m109 g = _______ kg 250 m = _______ km Conversion Practice Compare using, or =. 56 cm 6 m 7 g 698 mg

23. Write the correct abbreviation for each metric unit. 1) Kilogram _____ 4) Milliliter _____ 7) Kilometer _____ 2) Meter _____ 5) Millimeter _____ 8) Centimeter _____ 3) Gram _____ 6) Liter _____ 9) Milligram _____ Try these conversions, using the ladder method. 10) 2000 mg = _______ g 15) 5 L = _______ mL 20) 16 cm = _______ mm 11) 104 km = _______ m 16) 198 g = _______ kg 21) 2500 m = _______ km 12) 480 cm = _____ m 17) 75 mL = _____ L 22) 65 g = _____ mg 13) 5.6 kg = _____ g 18) 50 cm = _____ m 23) 6.3 cm = _____ mm 14) 8 mm = _____ cm 19) 5.6 m = _____ cm 24) 120 mg = _____ g Metric Conversion Challenge

24. Compare using, or =. 25) 63 cm 6 m 26) 5 g 508 mg 27) 1,500 mL 1.5 L 28) 536 cm 53.6 dm 29) 43 mg 5 g 30) 3.6 m 36 cm

25. 25 Metric Units of Length Measurement Conversion  Using a bridge map can help organize your thinking when converting from one metric unit to another.

26. 26 Use money as example What denomination to use as a purchase for a ice cream bubble gum flat screen

27. 27 as (just like) Relating factor

28. 28 Metric Length Conversion Examples: 3 m = _____ cm 1 m = 100 cm 3 x 100 = 300 300 Large to small as (just like) Relating factor 1 m is equal to 3 m 100 cm 300 cm X 100

29. 29 Metric Length Conversion Examples: 2000 m = ___ km 1000 m = 1 km 2000 ÷ 1000 = 2 2 Small to large as (just like) Relating factor 1 km is equal to 2 km 1000 m 2000 m ÷ 1000

30. 30 Metric Length Conversion Examples: 40 mm = ___ cm 10 mm = 1 cm 40 ÷ 10 = 4 4 Small to large as (just like) Relating factor 1 cm is equal to 4 cm 10 mm 40 mm ÷ 10

31. 31 Metric Length Conversion Examples: 25 cm = ___ mm 1 cm = 10 mm 25 x 10 = 250 250 Large to small as (just like) Relating factor 1 cm is equal to 25 cm 10 mm 250 mm X 10