Lesson 3 Biomedical Technology 12/4/07
Medical Math: Household to Metric & Roman Numerals
From Lesson 2
Practice with metric conversions: (on your output)
1. Length
Convert the following:
a. 1 meter = ____ centimeter(s)
b. 1 meter = ____ millimeter(s)
c. 10 millimeters = ____ centimeter(s)
2. Volume for Fluids
Convert the following:
a. 1 liter = ____ milliliter(s)
b. 1 milliliter = ____ deciliter(s)
c. 10 deciliters = ____ liter(s)
3. Weight
Convert the following:
a. 1000 hg = ____ milligram(s)
b. 1 gram = ____ milligram(s)
c. 1 kilogram = ____ gram(s)
Notes
Household to Household Conversions:
Write in the symbols for the following household units of measure:
Mass/Weigh
1. Ounce ___________
2. Pound ______________
Length/distance
1. Inch ________ or ___________
2. Foot __________ or ___________
3. Yard _____________
Capacity/Volume
1. Teaspoon __________
2. Tablespoon ________ or ________
3. Ounce __________
4. Cup _________
Lesson 3 Biomedical Technology 12/4/07
Medical Math: Household to Metric & Roman Numerals
5. Pint _________
6. Quart ___________
7. Cubic Centimeter ______________
Here are some common household conversions you should commit to memory:
Volume
1 qt = ____________
3 tsp = ____________
Length/distance
1 yard = ___________
12 in = _____________
Mass
1 lb. = _______________
Here are some common metric to household conversions you should commit to
memory:
Volume
1 L = ______________
30 ml. = ___________
5 ml = __________
1 ml = ___________
Length/distance
1 m = _______________
0.91 m = _________
2.54 cm = ___________
Mass
1 kg = _____________
Household to Metric Thinkables (output)
1. How many oz are in 1 liter?
2. How many oz in 1 kg?
3. How ml in 1 T?
4. How many cc in 1 tsp?
Notes
How to convert household to metric and vice versa:
You can convert the units between metric and household. Just use this simple
conversion method:
1. Draw a cross like the one your teacher is demonstrating
Lesson 3 Biomedical Technology 12/4/07
Medical Math: Household to Metric & Roman Numerals
2. On the upper left hand grid write in “What I have”
3. On the lower right hand grid write in “Equal units”
4. On the upper right hand grid write in “What I want”
5. Anytime you have numbers in grids next to each other---MULTIPLY the two
numbers
6. Anytime you have one number below another in the grids---DIVIDE the upper
number by the bottom number
For example: a 4 month old baby weighs 14 lbs. How many kg is that equivalent to?
Do it step by step, following the 6 steps listed above
Notes:
Roman Numerals
Their use in medicine:
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
All numbers can be expressed by using 7 key numerals:
I= C=
V= D=
X= M=
L=
Lesson 3 Biomedical Technology 12/4/07
Medical Math: Household to Metric & Roman Numerals
Rules for using Roman Numerals
1. When a smaller numeral is placed in front of a larger numeral, it is
___________________________________________________________
Example: XL=L-X
2. When a smaller number is placed after a larger number, the
___________________________________________________________________________
Examples: CX = C + X
3. When the same number is placed next to itself, ____________________________________
Examples: III = 1+1+1 = 3
4. The same numeral is __________________________________________________________
Examples: XXX = 10+10+10 = 30 but XXXX does not equal 40
Practice problems: (output)
1. Household to Metric Conversions
a. __________ Convert 37 in. to cm.
b. __________ Convert 14 lbs. to oz.
c. __________ Convert 75 in. to m.
d. __________ Convert 15 oz. to ml
2. Give me the Roman Numeral for:
a. 300
b. 53
c. 14
d. 1298
3. Convert the following Roman Numerals to Arabic numbers:
a. LVII
b. CCI
c. MCD
d. VIII
Homework Due Date