Basic MathBasic Math

Why is Math Important in Health Care?

Military Time

Based on 24 hour clockNo am or pmExpressed in 4 digits00001st 2 numbers = hourLast 2 numbers = minutes

Graphs:

Systems of measurement

HouseholdMetric

Household:

Used in homeTeaspoon, tablespoon, pint,

quart, gallonPound, inch, foot, yardCan convert to metric by

simple math

Metric system:

Most widely used in health care

Decimal system; based on # 10

Monetary system in U.S. is based on metric

Metric system basic units:

Based on meter, gram & literMeter (m): lengthGram: (G), g, OR gm):

WeightLiter (l): liquid

GREEK AND LATIN PREFIXES:

Centi - 1/100 Milli - 1/1000

Kilo - x 1000

Metric System Uses:

MedicationsMeasure fluid intake Measure urinary outputMeasure newborn weight &

length

Common equivalents:

Distance:1 meter = 100 centimeters = 3.28 feet 2.54 cm = 1 inch

Weight:1 Kilogram (kg) = 1000 gram (g)= 2.2 pounds (lb)500 g = 1 lb

Volume:

1000 milliliters (ml) = 1 liter (l)

1 ml = 1 cubic centimeter (cc)

Memorize these Metric & household Equivalents:

1 liter = 1 quart30 ml = 1 ounce (2 tbsp)15 ml = 1 tablespoon5 ml = 1 teaspoon

1 kg = 2.2 pound1 ml = 15 drops1 inch = 2.5 cm

So….1 mm = meter1cm = meter1km = meter1ml = liter1L = liter1000ml = liter2000mg = grams1000mcg= grams

250ml = L0.5L = ml2G = mg500mg = G0.0300G = mg0.05mg = G1mcg = mg2kg = lbs60mg = G

0.005L = ml200ml = L0.0065G = G3.5cc = L4KG = G1ml = L0.05mg = G

Temp conversion you must remember:

F to C

F-32 x 5/9=C

Example: 98.6F98.6-32=

66.6

66.6 x 5 = 1 9

333 9

= 37C

C to FC x 9 / 5 + 32 = F

Example: 37C

37 x 9 =333

333 / 5=66.6

66.6 + 32 = 98.6

Practice:95F = C40C = F94F = C38C = F101F = C10C = F

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

I. The Scientific MethodA. An organized approach to learn how

the natural world works.

1. Ask a question

2. Form a hypothesis(a proposed explanation)

3. Perform an experiment

4. Analyze the data

5. Make your conclusion

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.