Post on 19-Jan-2016
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Metric Conversions DRUL Method
Warm-up: Writing Metric Terms
• List as many rules for writing metric rules as you can think of in your notebook
• Come up to the board and list your answers. If your answer is the same as another student’s place a check mark next to their answer.
Rules for writing metric terms:• Square the actual unit, not the measurement.
• Use a 0 in front of the decimal point
• Use a space between number and unit symbol
• Don’t use plurals
• No Fractions always decimals
• When moving up go to the left and when moving down go to the right .
• No periods at the end of a measurement
Metric System
• Standard measurement system used in almost all countries and in science
• Easy to convert measurements
• Based on powers of ten
• Convert by moving the decimal point (NO FRACTIONS!)
Units of Measurement
Unit Symbol What it Measures
Meter m length
Gram g weight
Liter L volume
Celsius C temperature
10 mm = 1 cm
Millimeter is smaller; centimeters are larger.
Equals
• 3 cm = ____ mm
• 20 mm = ____ cm
Metric AbbreviationsWrite 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 =_____
KILO1000Units
HECTO100
Units
DEKA10
UnitsDECI
0.1Unit
CENTI0.01Unit
MILLI0.001Unit
MetersLitersGrams
DRUL Method12
3
Up to the Left
Down to the Right
Kilo Hecto Deka OVER Deci Centi Milli
Kids Have Dropped OVER Dead Converting Metrics
King Henry Does OVER Drink Chocolate Milk
Equals
KILO1000Units
HECTO100
Units
DEKA10
UnitsDECI
0.1Unit
CENTI0.01Unit
MILLI0.001Unit
MetersLitersGrams
DRUL Method
How do you use the “DRUL” method?
1st – Determine your starting point.
2nd – Count “jumps” to your ending point.
3rd – Move decimal point same number of jumps in same direction.
4 km = _________ m
12
3
How many jumps does it take?
Starting Point Ending Point
4.1
__.2
__.3
__. = 4000 m
Up to the Left
Down to the Right
Try these conversions using the ladder method.
1000 mg = _______ g 1 L = _______ mL 160 cm = _______ mm
14 km = _______ m 109 g = _______ kg 250 m = _______ km
Conversion Practice
Compare using <, >, or =.
56 cm 6 m 7 g 698 mg
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
Compare using <, >, or =.
25) 63 cm 6 m 27) 5 g 508 mg 29) 1,500 mL 1.5 L
26) 536 cm 53.6 dm 28) 43 mg 5 g 30) 3.6 m 36 cm