Med Math Dosage Calculations

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Questions and Answers

A client is to receive 0.2 mg of a medicine. The tablets available are 0.4 mg. How many tablets do you need?

1/2 scored tablet

A client is to receive 1.25 mg of a medicine. The tablets available are 0.625 mg. How many tablets do you need?

2 tablets

A client is to receive 7.5 mg of a medicine. The tablets available are 15 mg. How many tablets do you need?

1/2 scored tablet

4 kg = ______ g

4000 g Signup and view all the answers

A client is to receive 10 mg of a medicine. The tablets available are 20 mg. How many tablets do you need?

1/2 scored tablet Signup and view all the answers

A client is to receive 100 mg of a medicine. The tablets available are 50 mg. How many tablets do you need?

2 tablets Signup and view all the answers

A client takes 1.5 tablets of medication QID for 4 days. How many tablets will the patient consume at the end of the 4 days?

24 tablets Signup and view all the answers

0.736 mg = ________ mcg

736 mcg Signup and view all the answers

One tablet contains 200 mg of pain medication. How many mg are in 3 1/2 tablets?

700 mg Signup and view all the answers

Order: 10,000 units subcut of a medication. Available 7,500 units per mL. How many mLs?

1.3 mL Signup and view all the answers

Order: 500 mcg IV of a medication. Available 750 mcg per 3 mL. How many mLs?

2 mL Signup and view all the answers

500 mL = _____ L

0.5 L Signup and view all the answers

60 g = _________ kg

0.06 kg Signup and view all the answers

A client has an order for 1,500 mL H2O PO every 24 hours. How many oz. is this?

50 oz Signup and view all the answers

Order: 20 mEq IV of a medication. Available: 40 mEq per 10 mL. How many mLs?

5 mL Signup and view all the answers

Order: 45 mg p.o. of a medication. Available: Tablets labeled 30 mg. How many tablets?

1 1/2 scored tablets Signup and view all the answers

Order: 0.25 mg IM of a medication. Available: 0.5 mg per mL. How many mLs?

0.5 mL Signup and view all the answers

Order: 90 mg p.o. of a medication. Available: Tablets labeled 180 mg. How many tablets?

1/2 scored tablet Signup and view all the answers

Order: 0.5 g p.o. of a medication. Available: Tablets labeled 250 mg. How many tablets?

2 tablets Signup and view all the answers

What is the conversion factor for inches to cm?

1 inch = 2.5 cm Signup and view all the answers

Order: 50 mg IM of a medication. Available: 80 mg per 2 mL. How many mLs?

1.25 mL Signup and view all the answers

What is the conversion factor used to go from Celsius to Fahrenheit?

C = (F - 32) / 1.8 Signup and view all the answers

What is the conversion factor used to go from Fahrenheit to Celsius?

F = 1.8(Celsius) + 32 Signup and view all the answers

Order: 0.24 g p.o of liquid medication. Available: 80 mg per 7.5 mL. How many mLs?

22.5 mL Signup and view all the answers

Order: 15 mg p.o. of a medication. Available: Tablets labeled 5 mg. How many tablets?

3 tablets Signup and view all the answers

What is 8:30 AM military time? How about 8:30 PM?

0830, 2030 Signup and view all the answers

Order: 400 mg p.o of liquid medication. Available: 125 mg per 5 mL. How many mLs?

16 mL Signup and view all the answers

Order: 0.125 mg IM of a medication. Available: 0.5 mg per 2 mL. How many mLs?

0.5 mL Signup and view all the answers

Order: 0.75 mg IM of a medication. Available: 0.25 mg per mL. How many mLs?

3 mL Signup and view all the answers

What time is 0715? What about 1950?

7:15 AM, 7:50 PM Signup and view all the answers

Order: 375 mg p.o of liquid medication. Available: 125 mg per 5 mL. How many mLs?

15 mL Signup and view all the answers

How many lbs are in a kg?

2.2 lb = 1 kg Signup and view all the answers

Order: 20 mg IM of a medication. Available: 25 mg per 1.5 mL. How many mLs?

1.2 mL Signup and view all the answers

Order: 2 mg IM of a medication. Available: 1.5 mg per 0.5 mL. How many mLs?

0.7 mL Signup and view all the answers

A patient has a temperature of 101.4 F, what is that in Celsius? (Round to the nearest 10th)

38.6 Signup and view all the answers

Order: 0.15 mg IM of a medication. Available: 0.2 mg per 1.5 mL. How many mLs? Round to the nearest 10th

1.1 mL Signup and view all the answers

77 F is equivalent to ___________ Celsius

25 Signup and view all the answers

If 15 mL of solution contains 75 mg of medication, how many mg of medication are in 60 mL of solution?

300 mg Signup and view all the answers

A client must take three tablets per day for 28 days, how many tablets should the pharmacy supply to fill this order?

84 tablets Signup and view all the answers

44.5 cm = ________ mm

445 mm Signup and view all the answers

A health care provider is instructed to administer 700 mL of a solution every 8 hrs. How many hours will be needed to administer 2,100 mL?

24 hours Signup and view all the answers

Two tabs contain a total of 6.25 mg of a medication. How many milligrams of medication are in 10 tablets?

31.25 mg Signup and view all the answers

If 80 mg of medication is in 480 mL of solution, how many milliliters of solution contain the 60 mg?

360 mL Signup and view all the answers

Study Notes

Medication Dosages

0.2 mg of medication requires 0.5 of a scored tablet (available: 0.4 mg).
1.25 mg of medication requires 2 tablets (available: 0.625 mg).
7.5 mg of medication requires 0.5 of a scored tablet (available: 15 mg).
10 mg of medication requires 0.5 of a scored tablet (available: 20 mg).
100 mg of medication requires 2 tablets (available: 50 mg).
45 mg of medication requires 1.5 of a scored tablet (available: 30 mg).
90 mg of medication requires 0.5 of a scored tablet (available: 180 mg).
0.5 g of medication requires 2 tablets (available: 250 mg).

Conversions

4 kg equals 4000 g (not 400 g).
500 mL converts to 0.5 L.
60 g equals 0.06 kg.
0.736 mg converts to 736 mcg.
1 inch equals 2.5 cm.
2.2 lb equals 1 kg.
44.5 cm converts to 445 mm (10 mm per cm).

Dosage Calculations

A client takes 1.5 tablets of medication QID for 4 days, totaling 24 tablets.
Administering 700 mL of solution every 8 hours will need 24 hours to administer 2,100 mL.
12.50 mg of solution requires 22.5 mL (available: 80 mg per 7.5 mL).
Administration of 20 mEq of medication requires 5 mL (available: 40 mEq per 10 mL).

Time Conversions

8:30 AM military time is 0830; 8:30 PM is 2030.
0715 in standard time is 7:15 AM; 1950 is 7:50 PM.

Temperature Conversions

101.4 F translates to approximately 38.6 °C.
To convert Celsius to Fahrenheit: C = (F - 32) / 1.8.
To convert Fahrenheit to Celsius: F = 1.8(C) + 32.

Tablet and Medication Calculations

One tablet containing 200 mg results in 700 mg when taking 3.5 tablets.
If 15 mL contains 75 mg of medication, then 60 mL contains 300 mg.
If a client must take 3 tablets daily for 28 days, supply 84 tablets.
Two tablets contain 6.25 mg; ten tablets contain 31.25 mg of medication.
Solution containing 80 mg in 480 mL means 60 mg is in 360 mL of solution.

Miscellaneous

Order for 50 mg IM of a medication available as 25 mg per 1.5 mL requires 1.2 mL.
Order for 20 mg IM with available 25 mg per 1.5 mL requires 1.2 mL.
A 0.15 mg IM order needs 1.1 mL when available as 0.2 mg per 1.5 mL.

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Description

Test your skills in medical mathematics with this quiz focused on dosage calculations. You'll encounter various scenarios where you'll need to determine the correct number of tablets to administer based on given dosages. Perfect for nursing students and healthcare professionals alike.