Medical Math for Health Team

Know the abbreviations

oLength/Distance - Householdinch (“ or in)foot (‘ or ft)yard (yd)

Metric System

• Distance/length: meter (m)• Volume: liter (L)• Mass/weight: gram (g or gm) • Common metric prefixes• Kilo: 1000 times• Centi: 1/100(100 times)• Milli: 1/1000

Capacity/Volume - Household• teaspoon (t or tsp)• tablespoon (T or tbsp)• ounce (oz)• cup (C)-8 oz = 1 C (KNOW)• pint (pt)• quart (qt)

»Mass/Weight - Household• ounce (oz )• pound ( lb )

Metric conversions

1 m = 100 cm1 m = 1000 mm10 mm = 1 cm1 L = 1000 mL1 mL = 1 cc1 g = 1000 mg1 kg = 1000 g

Convert among metric and standard measurements.

Memorize!!1 in = 2.5 cm 39.4 in = 1 m 1 tsp = 5 mL 1 oz = 30 mL 1 qt = 1000 cc 2.2 lb = 1 kg Celsius to Fahrenheit (0C x 1.8) + 32 = 0FFahrenheit to Celsius (0F – 32) / 1.8 = 0C

TemperatureMemorize!!!

Celsius to Fahrenheit (0C x 1.8) + 32 = 0F

Fahrenheit to Celsius (0F – 32) ÷ 1.8 = 0C

Military TimeTime expressed using 4 digits0100 = 1 am0530 = 5:30 am1200 = noon1400 = 2 pm2000 = 8 pm2400=midnight

12 midnight on the dot is called 2400 (twenty-four-hundred).

Once you are even a minute past, you use 0000, for this is where the 24-hour clock officially starts.

An example- let's say 15 minutes past midnight. You use 0015, and you pronounce it "zero-zero-one-five." (12:15AM)

The trick the soldiers learn, is that whatever number you have, subtract 12 from it, and you have the regular time.

Example: 1800 hours.. (18-12=6) So, 1800 hours is 6 PM.

2230 Hours (22-12=10) 2230 hours is 10:30 PM

A Look at 2400 clock

What time is 11:00 a.m. in military time?

What time is 5:30 pm military time?

Roman NumeralsRoman numerals are sometimes used for

medications and solutions as well as with organizing file systems in health care.

I = 1V = 5X = 10L = 50C = 100D = 500M = 1000

Roman Numeral Rules

No more than three of the same Roman Numerals should be used in a sequence.

When the same number is next to itself, you add them together. (XX is 10+10=20)

When a smaller number is before a larger one (such as in IV), then the smaller number is subtracted from the larger one. (5-1=4)

If a smaller number is after a larger one, then you add. VI would be (5+1=6)

Practice Makes Perfect:What is the Roman numeral for 40?Use L for 50 and X for ten and remember

your rules to place them properly!!XL-subtract the smaller number X (10) from

the larger number L(50)- (50-10=40)

Lets practice again:You need to order LXVIII boxes of probe

covers for your thermometers in the medical clinical where you work.

How many is this?L=50X=10VIII= (5+1+1+1)=8Add all together 50+10+8=68

More Practice:You have CLXIV members of your high

school club. How many are there?C=100L=50X=10IV (remember I is smaller than V so you

subtract V=5 and I=1 so 5-1=4)Add them all together 100+50+10+4=164