Healthcare Math Flashcards
What is the most widely used measurement system in the world?
The metric system
The metric system is also the primary system of measurement used in the medical field.
What are the three base units of the metric system?
- Gram (g) - weight
- Liter (L) - volume
- Meter (m) - length
These units are fundamental for measurements in the metric system.
How is the metric system structured?
It is based on powers of 10
This structure allows for easy conversion between units.
What mnemonic device can help remember the order of metric units?
‘King Harry died from a disease called malaria’
This phrase aids in recalling the hierarchy of metric prefixes.
What is the shortcut method for converting metric units?
Draw a line with prefixes and write the base unit
The base units are gram, liter, or meter.
When converting from a larger unit to a smaller unit, which direction do you move the decimal point?
To the right
This movement corresponds to multiplying by a power of 10.
Convert 5 kilograms to milligrams.
5,000,000 mg
This is done by moving the decimal point six places to the right.
When converting from a smaller unit to a larger unit, which direction do you move the decimal point?
To the left
This movement corresponds to dividing by a power of 10.
Convert 2500 milliliters to liters.
2.5 L
This conversion involves moving the decimal point three places to the left.
What does moving the decimal point to the right signify in metric conversions?
Multiplying by a power of 10
This is essential for understanding how to convert larger units to smaller ones.
What does moving the decimal point to the left signify in metric conversions?
Dividing by a power of 10
This is essential for understanding how to convert smaller units to larger ones.
What is the prefix for 1000 in metric measurement?
Kilo-
What is the prefix for 100 in metric measurement?
Hecto-
What is the prefix for 10 in metric measurement?
Deca-
What is the base unit in metric measurement?
Base Unit
What is the prefix for 0.1 in metric measurement?
Deci-
What is the prefix for 0.01 in metric measurement?
Centi-
What is the prefix for 0.001 in metric measurement?
Milli-
What is the metric unit for weight at the base unit?
Gram
What is the metric unit for weight in kilograms?
Kilogram
What is the metric unit for weight in milligrams?
Milligram
What is the metric unit for volume at the base unit?
Liter
What is the metric unit for volume in kiloliters?
Kiloliter
What is the metric unit for volume in milliliters?
Milliliter
What is the metric unit for length at the base unit?
Meter
What is the metric unit for length in kilometers?
Kilometer
What is the metric unit for length in millimeters?
Millimeter
What mnemonic can help remember the order of metric units?
King Kilo Harry Hector Died from a Disease Called Malaria
What is the equivalent of 1 gram in milligrams?
1 g = 1000 mg = 1,000,000 mcg
0.001 g = 1 mg = 1,000 mcg
0.000001 g = 0.001 mg = 1 mcg
What is the equivalent of 1 liter in milliliters?
1 L = 1000 mL
0.1 L = 1 dL
0.001 L = 1 mL
What is the equivalent of 1 meter in centimeters?
1 m = 100 cm = 1000 mm
0.01 m = 1 cm = 10 mm
0.001 m = 0.1 cm = 1 mm
What are customary household measurements?
Customary household measurements are units used for measuring ingredients and quantities in a home setting, often with equivalents in metric.
These measurements are seldom used in medical settings but may be relevant for patient instructions.
How can you convert customary units of measurement?
You can convert customary units using a proportion, which is two equal ratios.
A ratio is a fraction that compares two numbers.
How do you set up a proportion to convert tablespoons to fluid ounces?
To convert tablespoons to fluid ounces, use the equivalency 1 fl oz = 2 T to set up the proportion: 1 fl oz / 3 fl oz = 2 T / x T.
Cross multiply and solve for x.
What is the conversion of 24 ounces to cups?
To convert 24 ounces to cups, set up the proportion: 8 fl oz / 1 cup = 24 fl oz / x cups.
Solve for x to find the number of cups.
How do you calculate the number of tablespoons from 45 mL?
To calculate tablespoons from 45 mL, use the equivalency 1 T = 15 mL to set up the proportion: 15 T / x = 1 / 45.
Solve for x to find the number of tablespoons.
How do you convert 250 pounds to kilograms?
To convert 250 pounds to kilograms, use a proportion based on the conversion factor.
Round to the nearest tenths place if necessary.
What is the first step to calculate how long a 16 fl oz bottle will last if a child takes 24 mL of medication 4 times a day?
Step 1: Calculate the total mL per day: 24 mL/dose x 4 times per day = 96 mL/day.
This is the total daily dosage.
How do you convert 96 mL into ounces?
To convert 96 mL into ounces, use the proportion: 1 fl oz / 30 mL = x fl oz / 96 mL.
Solve for x to find the equivalent in ounces.
What is the final step to calculate how many days a 16 fl oz bottle will last?
Step 3: Set up the proportion: 3.2 fl oz / 1 day = 16 fl oz / x days.
Solve for x to find the number of days.
What is the abbreviation for drops?
gtts
What is the abbreviation for teaspoon?
t
What is the abbreviation for tablespoon?
T
What is the abbreviation for fluid ounce?
fl oz
What is the abbreviation for cup?
cup
What is the abbreviation for pint?
pt
What is the abbreviation for quart?
qt
What is the abbreviation for ounce (weight)?
oz
What is the abbreviation for pound?
Ib
What is the abbreviation for inches?
in
What is the abbreviation for feet?
ft
What is the abbreviation for yard?
yd
How many drops are in a teaspoon?
60 gtts
How many teaspoons are in a tablespoon?
3 t
How many tablespoons are in a fluid ounce?
2 T
How many fluid ounces are in a cup?
8 fl oz
How many cups are in a pint?
2 cups = 16 fl oz
How many pints are in a quart?
2 pt = 4 cups = 32 fl oz
How many ounces are in a pound?
16 oz
How many inches are in a foot?
12 in
How many feet are in a yard?
3 ft = 36 in
What is the approximate equivalent of 1 teaspoon in mL?
5 mL
What is the approximate equivalent of 1 tablespoon in mL?
15 mL = ½ fl oz
What is the approximate equivalent of 1 fluid ounce in mL?
30 mL = 6 t
What is the approximate equivalent of 1 liter in fluid ounces?
32 fl oz
What is the approximate equivalent of 1 cup in mL?
240 mL
What is the approximate equivalent of 1 kilogram in pounds?
2.2 lb
What is the approximate equivalent of 1 inch in cm?
2.5 cm
What are the metric units Sam frequently works with for inventory calculations?
Liters (L) and milliliters (mL).
What is the equivalency between liters and milliliters?
1 L = 1000 mL.
How can you convert liters to milliliters using a shortcut?
Move the decimal point three places to the right.
Convert 3.5 L to mL.
3.5 L = 3500 mL.
How can you convert milliliters to liters using a shortcut?
Move the decimal point three places to the left.
Convert 7000 mL to L.
7000 mL = 7 L.
What is the result of adding 4 L 750 mL and 2 L 650 mL?
6 L 1400 mL = 7.4 L.
What is the result of converting 6600 mL to liters?
6600 mL = 6.6 L.
What is the result of multiplying 2 L 300 mL by 8 L 1200 mL?
2 L 300 mL * 8 L 1200 mL = 9.2 L.
How many vials are in 1750 mL if each vial contains 250 mL?
1750 mL = 7 vials.
What is the result of adding 5 L 250 mL and 8 L 950 mL?
8500 mL.
What is the result of subtracting 750 mL from 8500 mL?
4 L 250 mL.
Convert 6500 mL to bottles if each bottle contains 500 mL.
6500 mL = 13 btl.
How many liters of saline solution does the clinic have on hand?
Sam counted 6 liters and 6 vials of 350 mL each.
What is the first step Sam took to calculate the total saline solution in liters?
Multiply 350 mL by 6.
What is the total amount of saline solution in liters after Sam’s calculations?
6 L + (total from step 2) = total L on hand.
What is the metric prefix for 0.001?
milli
What is the metric prefix for 0.01?
centi
What is the metric prefix for 0.000001?
micro
What is the metric prefix for 1000?
kilo
What is the metric base unit for Length?
meter
What is the metric base unit for Volume?
liter
What is the abbreviation for kilogram?
kg
What is the abbreviation for liter?
L
What is the abbreviation for millimeter?
mm
What is the abbreviation for meter?
m
What is the abbreviation for milligram?
mg
What is the abbreviation for centimeter?
cm
Which is larger: milligram or kilogram?
kilogram
Which is larger: centimeter or millimeter?
centimeter
Convert 4500 mL to liters.
4.5 L
Convert 2.5 g to milligrams.
2500 mg
Convert 500 mg to grams.
0.5 g
Convert 40.5 cm to millimeters.
405 mm
Convert 0.04 L to milliliters.
40 mL
Convert 800 mL to liters.
0.8 L
Convert 2 kg to grams.
2000 g
Convert 1.5 L to milliliters.
1500 mL
What is the maximum number of milligrams per day if prescribed 500 mg of Amoxicillin 4 times?
2000 mg
What is the maximum number of grams per day if prescribed 500 mg of Amoxicillin 4 times?
2 g
What is the metric prefix for 0.001?
milli
What is the metric prefix for 0.01?
centi
What is the metric prefix for 0.000001?
micro
What is the metric prefix for 1000?
kilo
What is the metric base unit for Length?
meter
What is the metric base unit for Volume?
liter
What is the abbreviation for kilogram?
kg
What is the abbreviation for liter?
L
What is the abbreviation for millimeter?
mm
What is the abbreviation for meter?
m
What is the abbreviation for milligram?
mg
What is the abbreviation for centimeter?
cm
Which is larger: milligram or kilogram?
kilogram
Which is larger: centimeter or millimeter?
centimeter
Convert 4500 mL to liters.
4.5 L
Convert 2.5 g to milligrams.
2500 mg
Convert 500 mg to grams.
0.5 g
Convert 40.5 cm to millimeters.
405 mm
Convert 0.04 L to milliliters.
40 mL
Convert 800 mL to liters.
0.8 L
Convert 2 kg to grams.
2000 g
Convert 1.5 L to milliliters.
1500 mL
What is the maximum number of milligrams per day if prescribed 500 mg of Amoxicillin 4 times?
2000 mg
What is the maximum number of grams per day if prescribed 500 mg of Amoxicillin 4 times?
2 g
What is the abbreviation for pint?
_pt
What is the abbreviation for pound?
Ib
What is the abbreviation for drops?
gtts
What is the abbreviation for tablespoon?
T_
What is the abbreviation for quart?
at
What is the abbreviation for fluid ounce?
_floz
What is the equivalency of 1 kg?
2.2
What is the equivalency of 1 fl oz?
30 mL
What is the proportion of 8 oz to T?
16 T
What is the proportion of 1.5 oz to T?
3 T
What is the conversion of 1 in to cm?
2.54
What is the conversion of 1 cup?
240 cm
What is the equivalency of 4 fl oz?
120 mL
How many fluid ounces is 150 mL?
5 fl oz
What is the baby’s weight in pounds?
18.7 Ib
What is the baby’s length in inches?
24.2 in
What is the length of a 5 inch wound in centimeters?
12.5 cm
How many mL is 2 cups of fluid?
480 mL
How many tablespoons is one dose of 30 mL?
2 T
How many total mL will the child take in one day?
60 mL
How many ounces is 60 mL?
2 fl oz
How many days will the 16 oz bottle of medication last?
8 days
How many total milliliters did Sam use to fill the dispensers?
3875 mL
After filling the dispensers, how many liters of sanitizer remain in the storage cabinet?
8.125 L
3875 mL = 3.875 L, 12 - 3.875 = 8.125
How many liters of dopamine did the clinic use this week?
1.75 L
35 × 50 = 1750 mL
On average, how many milliliters of saline solution does the clinic use each week?
2362.5 mL
9 L = 9000 mL, 9450 ÷ 4 = 2362.5
What is the total amount of children’s ibuprofen Sam used in liters?
1.65 L
275 x 6 = 1650 mL
How many 5 milliliter flu injections can Sam get from the 3 liter container?
600 flu injections
3 L = 3000 mL, 3000 ÷ 5 = 600
How many liters of the vaccine will be left after giving 350 flu shots?
1.25 L
350 x 5 mL/shot = 1750, 3000 - 1750 = 1250 mL
How many liters of ammonium solution will be left in the container after refilling?
4.725 L
6 - 1.275 = 4.725
How many liters of disinfectant does the clinic use in 6 months?
93 L
500 mL = .5 L, 15.5 x 6 = 93
How many liters of disinfectant cleaner should Sam order for a 6-month supply?
60.5 L
93 - 32.5 = 60.5
Convert 30 g to mg.
30 g = 30,000 mg
Convert 6.5 in to cm.
6.5 in = 16.25 cm
Convert 75 mL to L.
75 mL = 0.075 L
Convert 5 fl oz to mL.
5 fl oz = 150 mL
Convert 60 mL to tablespoons.
60 mL = 4 T
Convert 80 kg to lb.
80 kg = 176 lb
What is the metric base unit of measure for volume?
A liter is the metric base unit of measure for volume.
What mnemonic device can you use to remember the order of metric units?
King Harry Died from a Disease Called Malaria
What is the infant’s head circumference in inches if it is 40 cm?
The infant’s head circumference is 16 in.
What is the patient’s weight in kilograms if he weighs 286 pounds?
The patient weighs 130 kg.
How many tablespoons should the patient take per dose if prescribed 30 mL?
The patient should take 2 T per dose.
How should the patient prepare the solution with 10 mL of Betadine concentrate in 480 mL of warm water?
Mix 2 teaspoons of Betadine concentrate in 2 cups of warm water.
10 mL = 2 t and 480 mL = 2 cups.
How many liters of saline solution does Sam need to order if the clinic has 11 liters 750 milliliters?
Sam needs to order 28.25 L.
How many 0.5 mL polio injections can be prepared from 400 mL of vaccine?
800 polio injections can be prepared.
How many liters of cleaner are there in all if there is 1 liter 650 milliliters in each of the eight examination rooms?
There are 13.2 L of cleaner in all.
