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Basic MathBasic Math
Why is Math Important in Health Care?
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Military Time
Based on 24 hour clockNo am or pmExpressed in 4 digits00001st 2 numbers = hourLast 2 numbers = minutes
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Graphs:
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Systems of measurement
HouseholdMetric
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Household:
Used in homeTeaspoon, tablespoon, pint,
quart, gallonPound, inch, foot, yardCan convert to metric by
simple math
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Metric system:
Most widely used in health care
Decimal system; based on # 10
Monetary system in U.S. is based on metric
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Metric system basic units:
Based on meter, gram & literMeter (m): lengthGram: (G), g, OR gm):
WeightLiter (l): liquid
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GREEK AND LATIN PREFIXES:
Centi - 1/100 Milli - 1/1000
Kilo - x 1000
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Metric System Uses:
MedicationsMeasure fluid intake Measure urinary outputMeasure newborn weight &
length
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Common equivalents:
Distance:1 meter = 100 centimeters = 3.28 feet 2.54 cm = 1 inch
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Weight:1 Kilogram (kg) = 1000 gram (g)= 2.2 pounds (lb)500 g = 1 lb
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Volume:
1000 milliliters (ml) = 1 liter (l)
1 ml = 1 cubic centimeter (cc)
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Memorize these Metric & household Equivalents:
1 liter = 1 quart30 ml = 1 ounce (2 tbsp)15 ml = 1 tablespoon5 ml = 1 teaspoon
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1 kg = 2.2 pound1 ml = 15 drops1 inch = 2.5 cm
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So….1 mm = meter1cm = meter1km = meter1ml = liter1L = liter1000ml = liter2000mg = grams1000mcg= grams
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250ml = L0.5L = ml2G = mg500mg = G0.0300G = mg0.05mg = G1mcg = mg2kg = lbs60mg = G
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0.005L = ml200ml = L0.0065G = G3.5cc = L4KG = G1ml = L0.05mg = G
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Temp conversion you must remember:
F to C
F-32 x 5/9=C
Example: 98.6F98.6-32=
66.6
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66.6 x 5 = 1 9
333 9
= 37C
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C to FC x 9 / 5 + 32 = F
Example: 37C
37 x 9 =333
333 / 5=66.6
66.6 + 32 = 98.6
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Practice:95F = C40C = F94F = C38C = F101F = C10C = F
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Rounding:Nearest hundred:
544 587 620 501 8891326 152 2465 521 5834
Nearest tenth:5.23 8.653 4.256 3.21 8.965.649 5.34 10.85 4.62 8.66
Nearest ten:548 620 548 3415 3526856 2145 325 410 546
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I. The Scientific MethodA. An organized approach to learn how
the natural world works.
1. Ask a question
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2. Form a hypothesis(a proposed explanation)
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3. Perform an experiment
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4. Analyze the data
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5. Make your conclusion
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II. The Importance of the Scientific MethodA. Continues to allow science to grow
B. Is testable by anyone else, and theoutcome should be the same.