1. Standards of Measurement
© Copyright   M. J. Krech. All rights reserved.

2. Measurement Used to express the amount of something Unit
fixed amount or quantity used by everyone when measuring
Measuring must be
Reliable (dependable-gives you the same results on successive trials)
Accurate (exact -conforms to a standard)
Able to be Communicated (can be passed on in an understandable manner)

3. The Metric System International System of Units (SI)
Global language for measurement
Decimal based system of basic measurement which uses base units and prefixes
Base Units Include
Length = meter
Volume = liter
Mass = gram
Time = second
Temperature = degrees Celsius or Kelvin

4. The Metric System International System of Units (SI)
Prefixes are used with base units
Prefix Meaning Abbreviation
Kilo one thousand k
Hecto one hundred h
Deka ten da
Deci one tenth d
Centi one hundredth c
Milli one thousand m
Metric system is made up of prefixes and base units
Example:
Centi + meter = centimeter
Kilo liter = kiloliter

5. How to convert within the metric system
METRIC CONVERSION
How to convert within the metric system
© Copyright   M. J. Krech. All rights reserved.

6. King Henry Drinks Utterly Delicious Chocolate Milk
Mnemonic Phrase
King Henry Drinks Utterly Delicious Chocolate Milk
Memorize this!

7. How to convert within the Metric System
On your paper draw a line
and add 7 tick marks:

8. Next:
Above the tick marks write the abbreviations for the King Henry mnemonic phrase:
k h d u d c m m L g
Write the units in the middle under the “U”.

9. Let’s add the meter line:
k h d u d c m
km hm dam m dm cm mm L g

10. Let’s add the liter line:
k h d u d c m
km hm dam m dm cm mm
kL hL daL L dL cL mL g

11. Let’s add the gram line:
k h d u d c m
km hm dam m dm cm mm
kL hL daL L dL cL mL
kg hg dag g dg cg mg

12. How to use this device: Look at the problem. Look at the unit
that has a number. On the device put
your pencil on that unit.
Move to new unit, counting jumps and noticing the direction of the jump.
3. Move decimal in original number the same # of spaces and in the same direction.

13. Example #1: Look at the problem. 56 cm = _____ mm
Look at the unit that has a number. 56 cm
On the device put your pencil on that unit.
k h d u d c m
km hm dam m dm cm mm

14. Example #1: One jump to the right!
Move to new unit, counting jumps and
noticing the direction of the jump!
k h d u d c m
km hm dam m dm cm mm
One jump to the right!

15. Example #1:
Move decimal in original number the same # of spaces and in the same direction.
56 cm = _____ mm
56.0.
One jump
to the right!
Move decimal one jump to the right.
Add a zero as a placeholder.

16. Example #1:
56 cm = _____ mm
56cm = 560 mm

17. Example #2: Look at the problem. 7.25 L = ____ kL
Look at the unit that has a number L
On the device put your pencil on that unit.
k h d u d c m
kL hL daL L dL cL mL

18. Example #2: Move to new unit, counting jumps and
noticing the direction of the jump!
k h d u d c m
kL hL daL L dL cL mL
Three jumps to the left!

19. .007.25 Example #2: (3) Move decimal in original number the same
# of spaces and in the same direction.
7.25 L = ____ kL
Three jumps
to the left!
Move decimal to the left three jumps.
Add two zeros as placeholders.

20. Example #2:
7.25 L = ____ kL
7.25 L = kL

21. Example #3: Try this problem on your own: 45,000 g = ____mg
k h d u d c m
kg hg dag g dg cg mg

22. 45,000.000. Example #3: k h d u d c m kg hg dag g dg cg mg
Three jumps to the right!
45,

23. Example #3:
45,000 g = 45,000,000 mg
Three jumps to the right!

24. Example #4: Try this problem on your own: 5 cm = ____ km k h d u d c m
km hm dam m dm cm mm

25. .00005. Example #4: k h d u d c m km hm dam m dm cm mm
Five jumps to the left!

26. Example #4:
5 cm = km
Five jumps to the left!

27. Examples #5-9: (5) 35 mm = ____ cm (6) 14,443 L = ____ kL
(7) kg = ____ g
(8) L = ____ mL
(9) 16 mm = ____ km

28. Examples #10-14: (10) 10 km = ____ m (11) 13 g = ____ kg
(12) 56 mm = ____ km
(13) L = ____ mL
(14) 2,050 mg = ____ g

29. Common Conversions Length
1 ft = 12 in
1 yd = 3 ft
1 mi = ft
1 in = cm
1 km = mi

30. Common Conversions Volume
1 qt = 2 pts
1 gal = 4 qts
1 L = qts
1 cc = 1 cm3 = 1 mL
1 L
1 QT

31. Common Conversions Weight/Mass
1 lb = 16 oz
1 lb = g
1 kg = lbs

32. Common Conversions Temperature

33. Tool that offers a guarantee when dealing with conversions
Factor Label Method
Tool that offers a guarantee when dealing with conversions
Rules
Start with what is given
Use a string of conversion factors
Divide-out labels (Ask yourself - did you get a guarantee? )
Do arithmetic (if necessary - round final answer to nearest 100th )

34. The End