1. Medical Math
Chapter 13

3. Spelling Words
Celsius nomenclature
percentage centigrade
proportion Fahrenheit
reciprocal metric system
Roman numeral military time

4. Why use military time? To avoid confusion
If the AM or PM is left out of the traditional system, an error of 12 hours is made.
Accuracy is important!
Entering data on a patient chart
Recording when medications are given
Signing off on physician orders

5. When using military time, always use four digits
AM hours are expressed with the same numbers as the traditional clock
5:30 AM = 0530
10 AM = 1000
12 Noon = 1200

6. An easy way to convert the PM hours is to add the time to 1200

7. Why use Roman numerals in health care?
Used for some:
medications
solutions
ordering systems

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

10. improper fractions page 330
Define Terms
improper fractions page 330
reciprocal page 332
proportion page 334
metric system page 340

11. DEFINE TERMS:
angles estimating
apothecary system Fahrenheit
Celsius fractions
decimals household system
degrees

12. https://quizlet.com/_69l07k
Review Roman numerals

13. Household Measurement System
Distance/Length
12 in = 1 ft
3 ft = 1 yd
in = inches
ft = foot
yd = yard

14. Volume
1 gtt (drop)
60 gtt = 1 tsp
3 tsp = 1 tbsp
2 tbsp = 1 oz
8 oz = 1 cup
t or tsp = teaspoon
T or tbsp = tablespoon
oz = ounce

15. Weight
16 oz = 1 lb
ounce = oz
pound = lb

16. Metric System
1 mL = 1 cc
mL = milliliter
cc = cubic centimeter

17. Appox equivalents between the two measuring systems
1 tsp = 5 mL
1 oz = 30 mL
2.2 lb = 1 kg

18. A patient weighs 120 pounds. Convert to kilograms.
2.2 lb = 1 kg
120 lb x
2.2 x = 120
x= 54.5 kg