Medical Math principles of health science
On the refill instructions of a prescription, what does NR stand for?
No refills
How would you write 24 in Roman numerals?
XXIV
How would 45% be written as a decimal?
0.45
To convert 5 to a fraction, what would the denominator be?
1
A health care worker is told to mix a solution of bleach and water in a ratio of 1 : 10. Which of the following demonstrates this ratio?
1 cup of bleach, 10 cup of water
A patient had two speech therapy sessions this week. The first was 45 minutes and the second was 35 minutes. How much time did the patient spend in therapy this week?
1 hour, 20 minutes
A meeting lasted from 11:15 AM until 1:00 PM. How long was the meeting?
1 hour, 45 minutes
In the apothecary system, what does ss stand for?
1/2
A long-term care facility has 3 registered nurses and 12 nursing assistants. Which of the following is the correct way to express the ratio of registered nurses to nursing assistants?
1/4
What is 3/12 reduced to lowest terms?
1/4
Which of the following proportions is parallel?
100 mg : 1 tablet :: 500 mg : X tablets
What is 38°C in Fahrenheit? Use the equation °F = (°C × 1.8) + 32.
100.4°F
What is the boiling point on the Centigrade scale?
100°
How many pounds is 63 kilograms? (1 pound = 0.45 kilograms)
140 lbs
What is 2:30 PM in military time?
1430
How many ounces is 450 milliliters? (1 ounce = 30 milliliters)
15 oz
Which is the most common numerical system? If there are 16 patients on a hospital wing, what number of patients represent 100%?
16
What is 5:00 PM in military time?
1700
A patient weighs 154 pounds. She must receive medication in the amount of 25 mg/kg/day. How many milligrams of medication should she take each day? Remember that 1 kilogram = 2.2 pounds.
1750 mg per day
A hospital has 6 ambulances and 12 ambulance drivers. What is the ratio of ambulances to drivers when reduced to lowest terms?
1: 2
Which of the following proportions is parallel?
2 g : 1 capsule :: 10 g : X capsules
An appointment lasted from 2:30 PM until 5:15 PM. How long was the appointment?
2 hours, 45 minutes
A health care worker is asked to infuse 1000 milliliters of medication into a patient over a period of 12 hours, using a 15-drip set. What is the drip rate? Use the equation Drip Rate = Milliliters of Fluid x Drip Set / Minutes of Infusion.
20.8 drops per minute
What is the boiling point on the Fahrenheit scale?
212°
A patient weighs 176 pounds. He must receive medication in the amount of 30 mg/kg/day. How many milligrams of medication should he take each day? Remember that 1 kilogram = 2.2 pounds.
2400 mg per day
A health care worker is asked to infuse 500 milliliters of medication into a patient over a period of 5 hours, using a 15-drip set. What is the drip rate? Use the equation Drip Rate = Milliliters of Fluid x Drip Set / Minutes of Infusion.
25 drops per minute
A patient must take 50 milligrams of liquid medication. If 0.5 milliliters of medication contains 1 milligram of medication, how many milliliters of medication should the patient take?
25 mL
Which of the following ratios is reduced to lowest terms?
3 : 16
In one day, a doctor saw 6 female patients and 8 male patients. What is the ratio of female to male when reduced to lowest terms?
3 : 4
What is the freezing point on the Fahrenheit scale?
32°
What is 103°F in Centigrade? Use the equation °C = (°F - 32) ÷ 1.8.
39.4°C
A patient must take 300 milligrams of medication at lunch. The medication is available in capsules of 60 milligrams each. How many capsules should the patient take?
5 capsules
How many tablespoons is 75 milliliters? (1 tablespoon = 15 milliliters)
5 tbsp
A speech therapist saw 8 patients on Monday, 14 on Tuesday, 12 on Wednesday, 7 on Thursday, and 4 on Friday. What is the average number of patients the therapist saw each day this week?
9
What is a mathematical average?
A number that represents a set of numbers
What is the first step of adding 12.65 + 30.75?
Align the decimal points
A medication's trade name is that same as which of the following?
Brand name
Parenteral medication is often administered through which of the following routes?
By syringe
Which of the following is NOT a reason to estimate?
Deciding exactly how many of something you need.
What is the bottom number in a fraction?
Denominator
On a prescription, what is the Sig?
Directions for taking the medication
In a proportion, what are the two outer terms called?
Extremes
Which of the following is a unit for measuring volume in the apothecary system?
Fluidram
Which of the following is a base unit in the metric system?
Gram
Which is the most common numerical system?
Hindu-Arabic
In the apothecary system, what symbols are used if the dosage is 1 or greater?
Lower case Roman numerals
What is the first step in solving the problem 3/4 + 1/8?
Make the denominators the same
In a proportion, what are the two middle terms called?
Means
What is the most common measuring system in the world?
Metric
What is the mathematical equation for determining drip rate?
Milliliters of Fluid × Drip Set ÷ Minutes of Infusion
Which is the top number in a fraction?
Numerator
What is an organized system of counting?
Numerical system
In the metric system, what is added to the base unit to create specific values?
Prefix
What shows a relationship between like values?
Ratio
A proportion is an equation that shows the equality between two ____.
Ratios
Which of the following is NOT going to help you overcome math anxiety?
Refusing to do the work because it is difficult.
You want to quickly estimate the total cost of a couple of new office supplies you see in a catalog. Which of the following is the most time-efficient way to do so?
Round the prices to the nearest dollar, add them without a calculator, and decide if the purchase seems reasonable enough to pursue
Which symbol usually precedes medication instruction on a prescription?
Rx
What place value is "3" in 0.3?
Tenths
What caution is written on all prescription medication labels?
The medication should not be dispensed without a prescription.
On a medication label, what is the NDC?
The national code that identifies the drug
What is drip set?
The number of drops it takes to equal 1 milliliter
What is the rule for solving proportions?
The product of the means is equal to the product of the extremes.
Where is the English system the most common measuring system?
United States
What is the primary purpose of the apothecary system?
Writing medical dosages
Which of the following is the correct way to write one-half dram in the apothecary system?
dr ss
Which of the following is the correct way to write two grains in the apothecary system?
gr ii