Math and Dosage Calculations for Healthcare Professionals

How many grams are in 1 microgram? (ch. 4)

0.000001 grams

Using the conversion factor 30 g/1 oz, A dose of 400 mg, when rounded to the nearest thousandth of an ounce, is equal to

0.013 oz.

A measure of 72,594 mg equals how many kilograms? (ch.4)

0.072594 kg

An amount of a certain cough syrup is equal to 10 mL. If the patient will use a tablespoon to take this amount, how many tablespoons need to be administered?

0.67 tbsp

Six drams equals _____ fluid ounce(s).

0.75

A volume of 843 mL equals, to the nearest hundredth of a quart,

0.88 qt.

When a meter is divided by 100, the result is (ch. 4)

1 centimeter

A daily dose of a medicinal syrup is equal to 6 tsp. This quantity is equal to how many fluid ounces?

1 fl oz.

Which of the following is the correct conversion factor for converting milliliters to fluid ounces?

1 fl oz/30 mL

The conversion factor to convert from milligrams to grams is _______.

1 g/1,000 mg

The conversion factor for grams to pounds is _______.

1 lb/454 g

Which is the correct conversion factor for grams to ounces?

1 oz/30 g

Which of the following is a correct conversion factor for converting milliliters to tablespoons?

1 tbsp/15 mL

A kiloliter equals _____ liter(s). (ch. 4)

1,000

The conversion factor for milligrams (mg) to micrograms (mcg) is _______.

1,000 mcg/1 mg

A measure of 11.455 m equals how many centimeters? (ch. 4)

1,145.5 cm

3.75 ounces equals _____ grains.

1,800

A patient drank 1 cup of coffee, one-half cup of juice, and three 8-ounce glasses of water. How many liters of fluid did the patient drink?

1.08 L

A measure of 1,433 mm equals how many meters? (ch. 4)

1.433 m

The weight of the medication in a particular dose is equivalent to 0.05 oz. What is this quantity in grams?

1.5 grams

During the last 8 hours, a hospital patient drank 2 cups of water, 8 ounces of orange juice, and 12 ounces of coffee. He has also received 640 mL of fluid through an IV. Altogether, how many liters of fluid has the patient received during the 8 hours?

1.72 L

Rounded to the nearest tenth of a liter, the volume of 7.5 cups is equal to

1.8L

Using proportions, convert 22.5 pints to milliliters.

10,800 mL

There are _____ centimeter(s) in a meter. (ch. 4)

100

11:15 a.m. convert to 24-hour time

1115 hrs

A dose of 0.5 cup, when rounded to the nearest milliliter, is equal to

120 mL.

Rounded to the nearest tenth of a pound, 56 kg is equal to

123.2 lb.

An infant weighs 7.8 pounds, which is equal to

124.8 oz.

1234 convert to conventional time

12:34 p.m.

1 g =___gr

15 gr

1 t = mL

15 mL

The conversion factor for converting tablespoons to milliliters is

15 mL/1 tbsp.

The patient received a pint of medication from the pharmacy. This is equivalent to

16 fluid ounces.

1 lb =___oz

16 oz

A measure of 18,455.7 g equals how many kilograms? (ch. 4)

18.4557 kg

The conversion factor to convert from milliliters (mL) to teaspoons (tsp) is _______.

1tsp/5mL

32 ounces equals

2 pounds

1 fl. oz. =_____tbsp

2 tbsp

1 kg =___lb

2.2 lb

The conversion factor for converting kilograms to pounds is

2.2 lb/1 kg.

Using the conversion factor of 30 g/1 oz, Rounded to the nearest hundredth of an ounce, 74.5 g is equal to

2.48 oz.

Using the conversion factor 30 mL/fl oz, Rounded to the nearest hundredth of a fluid ounce, the volume of 85 mL is equal to

2.83 fl oz.

10:58 p.m. is _____ in 24 h time.

2258 hrs

Time is indicated with four digits and without the use of a.m. or p.m.

24-hour Time

A conversion factor used for converting cups to milliliters is

240 mL/1 c.

Bella weighs 55 lb. How many kilograms does she weigh?

25 kg

At a wellness checkup in June, a 2-year-old child weighed 22 lb, 4 oz. By September, the child had gained 1 lb, 12 oz, and by December the child had gained another 1 lb, 8 oz. How much did the child weigh at the December checkup?

25 lb, 8 oz

What is the correct metric notation for twenty-five and fourteen thousandths kilograms? (ch. 4)

25.014 kg

The correct notation for two hundred fifty-five and seven hundredths millimeters is (ch. 4)

255.07 mm.

A measure of 2.566 km equals how many centimeters? (ch.4)

256,600 cm

A stock bottle of liquid medication contains 2 pints of medication. At different times, 6 doses of 2 tbsp were removed from the bottle. How many fluid ounces of medication remain in the bottle?

26 fl oz

A measure of 0.027565 g equals how many micrograms? (ch.4)

27,565 mcg

Three and one-half fluid ounces equals _____ drams.

28

A meterstick is approximately _____ inches longer than a yardstick. (ch. 4)

3

The conversion factor for fluid ounces to liters is _______.

3 L/100 fl oz

The physician ordered 45 mL of a medication. How many tablespoons is this?

3 tbsp

Mr. Lopez was told to limit fluids to 1,500 mL a day. How many pints is this?

3.1 pints

210 minims is how many drams?

3.5 drams

The conversion factor for ounces to grams is _______.

30 g/1 oz

The physician has written an order to administer 2 tbsp of a medication. The label is supplied in milliliters. How many milliliters should be given?

30 mL

A volume of 6 teaspoons equals, to the nearest milliliter,

30 mL.

Which of the following is a correct conversion factor for converting fluid ounces to milliliters?

30 mL/1 oz

On the Fahrenheit temperature scale, water freezes at _____ degrees and boils at _____ degrees.

32, 212

Convert 34 cm to millimeters. (ch. 4)

340 mm

On the Celsius scale, the average body temperature is

37*

Using proportions, convert 17 kg to pounds.

37.4 lb

104°F = _____ converted to Celcius

40*C

Convert 45,880 mL to liters. (ch. 4)

45.88 L

1 lb =____g

454g

1 oz = ___gr

480 gr

1 tsp =__mL

5 mL

The correct metric notation for five and forty-five thousandths liters is (ch. 4)

5.045 L.

Which of the following is the correct metric notation for five and three-fourths of a liter? (ch. 4)

5.75 L

Sam has a prescription for a medication that says to take 3 fl oz for each dose. He has a measuring spoon set and will use the tablespoon measure. How many tablespoons of medication will he need to take the prescribed dose?

6 tablespoons

Taylor's mother is supposed to give him 2 tablespoons of a medication. She only has a teaspoon measure available. How many teaspoons should she give him?

6 teaspoons

1 gr =____mg

60 mg or 65 mg

How many fluid ounces are in 15 tbsp?

7 1/2 fl oz

The notation gr vii means

7 grains.

22°C = _____ converted to Fahrenheit

71.6 F

Using the conversion factor 30 g/1 oz, A dose of 2.5 ounces, when rounded to the nearest gram, is equal to

75 g.

An IV infusion delivers 0.0025 oz of medication every hour. Using dimensional analysis, What is the equivalent of this flow rate in milligrams per hour?

75 mg/hr

Convert 78,450 mg to grams. (ch. 4)

78.45 g

0730 convert to conventional time

7:30 a.m.

1 c=____fl oz

8 fl oz

An infant weighed 7 lb, 6 oz at birth. During the first week, she gained 4 oz; during the second week, she gained 6 oz; during the third week, she gained 7 oz; and during the fourth week, she gained 7 oz. How much did she weigh at the end of the 4 weeks?

8 lb, 14 oz

A daily dose of 40 mL, to the nearest teaspoon, is equal to

8 tsp.

Convert 8.09 L to milliliters. (ch. 4)

8,090 mL

Using dimensional analysis, convert 2 L to cups.

8.33 cups

The correct metric notation for eighty-two and twenty-three hundredths micrograms is (ch. 4)

82.23 mcg.

Which of the following is the correct notation for eighty-four and six tenths milliliters? (ch. 4)

84.6 mL

Angie weighs 43 kg. How many pounds is this?

94.6 lb

Ante meridian or before noon

A.M.

Which letter indicates the boiling temperature of water on the Fahrenheit thermometer?

C-212*F

Metric scale of temperature, originally defined as having the freezing point of water as 0° and its boiling point as 100

Celcius

Fahrenheit: Water Freezes 32* Room Temp 68* Body Temp 98.6* Water Boils 212*

Celcius: Water Freezes 0* Room Temp 20* Body Temp 37* Water Boils 100*

Uses a.m. and p.m. to indicate before noon or after 12 noon

Conventional Time

The freezing temperature of water on the Celsius scale is indicated by letter:

F- 0*C

Scale in which the freezing point of water is 32° and the boiling point is 212°

Fahrenheit

The physician ordered a medication for a patient to be given in four doses at 8-hour intervals. The first dose was given at 2:30 p.m on July 17. At what date and time will the last dose be administered?

July 18 at 1430

Post Meridian (p.m.) or afternoon

P. M.

Adam has an order for 1.5 oz of Maalox®. The measuring device is calibrated in milliliters. He calculates the dose at 22.5 mL. If this is the wrong dose, what error did Adam make?

This is the wrong answer; he chose the wrong conversion factor.

To avoid making calculation errors, it is important to _________ units when using conversion factors.

cancel

A _____ is made of two quantities that are equal to each other but expressed in different units.

conversion factor

A(n) _________________ is a fraction or ratio made of two quantities that are equal to each other but expressed in different units.

conversion factor

The correct way to state the 24 h time 1430 is

fourteen thirty.

The standard abbreviation for a gallon in the household system of measurement is

gal

The correct apothecary notation for five and one-half grains is

gr 5 1/2

The abbreviation for drop is

gtt

When writing a conversion factor, the quantity of units you wish to convert to

is placed in the numerator if using fractions.

The basic unit of volume in the metric system is the (ch. 4)

liter.

The basic unit of length in the metric system is the (ch. 4)

meter.

Which type of units are preferred for most dosage calculations?

metric

The most widely used system of measurement in the world is the (ch. 4)

metric system.

Sodium, potassium, and other electrolytes are often measured based on their equivalent weight using a unit called

milliequivalents.

A _____ is 11,00011,000 of a liter. (ch. 4)

milliliter

The correct abbreviation for minims in the apothecary system is

minim.

Which of the following is the same in both the apothecary system and the household system?

ounce

Which of the following is a standard abbreviation for teaspoon?

t

The abbreviation for tablespoon is

tbsp

The gram is the basic unit of _____ in the metric system. (ch. 4)

weight

Which is the correct equation for converting 6 fl oz to cups?

x c= 1 c/8 fl oz X 6 fl oz/1

Which is the correct equation using ratios for converting 45 oz to milliliters?

x mL : 45 oz = 30 mL : 1 oz

Which of the following is the correct equation for converting 4 tbsp to milliliters?

x mL/4 tbsp=15 mL/1 tbsp

Which equation is correct for converting 450 lb to kg?

x/450 lb=1 kg/2.2 lb

The correct way to state the 24 h time 0400 is

zero four hundred.