Medication Maths Quiz for Student Nurses
This mixed practice set helps learners identify which arithmetic structure a question requires before substituting values. It is not a competency assessment and does not replace university teaching or supervised assessment.
Use fictional or tutor-provided values only. These pages explain arithmetic and do not select, recommend, verify or administer treatment. Do not enter patient information or use DosePractice in a clinical workflow.
Formula
Choose the formula that matches the requested unit.
Before you start
Write the requested unit first. Decide whether the problem is asking for a volume, an amount, a rate, a duration or drops per minute. Only then select the formula.
A correct final number with the wrong unit is not a complete answer. Keep units visible throughout the working.
How this mixed set is built
The page uses four fictional questions from each of five arithmetic topics. Answers are generated from the same tested calculation functions used by the DosePractice preview.
20 practice questions
Try each fictional arithmetic question before opening its worked answer. Each item has a stable question ID and reporting link.
seo-dv-001Content 0.9.2.4-prelaunchReport this question
A fictional exercise asks for 250 mg from stock containing 500 mg in 2 mL. What volume is required?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
250 ÷ 500 × 2 = 1 mL
Mathematical result for this practice example: 1 mL
Check the operation order, unit conversion and final unit before moving on.
seo-dv-002Content 0.9.2.4-prelaunchReport this question
A fictional exercise asks for 75 mg from stock containing 150 mg in 3 mL. What volume is required?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
75 ÷ 150 × 3 = 1.5 mL
Mathematical result for this practice example: 1.50 mL
Check the operation order, unit conversion and final unit before moving on.
seo-dv-003Content 0.9.2.4-prelaunchReport this question
A fictional exercise asks for 40 mg from stock containing 100 mg in 5 mL. What volume is required?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
40 ÷ 100 × 5 = 2 mL
Mathematical result for this practice example: 2 mL
Check the operation order, unit conversion and final unit before moving on.
seo-dv-004Content 0.9.2.4-prelaunchReport this question
A fictional exercise asks for 30 mg from stock containing 60 mg in 2 mL. What volume is required?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
30 ÷ 60 × 2 = 1 mL
Mathematical result for this practice example: 1 mL
Check the operation order, unit conversion and final unit before moving on.
seo-dbw-001Content 0.9.2.4-prelaunchReport this question
A fictional weight is 70 kg and the exercise uses 2 mg/kg. What is the calculated amount?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
70 × 2 = 140 mg
Mathematical result for this practice example: 140 mg
Check the operation order, unit conversion and final unit before moving on.
seo-dbw-002Content 0.9.2.4-prelaunchReport this question
A fictional weight is 62.5 kg and the exercise uses 1.2 mg/kg. What is the calculated amount?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
62.5 × 1.2 = 75 mg
Mathematical result for this practice example: 75 mg
Check the operation order, unit conversion and final unit before moving on.
seo-dbw-003Content 0.9.2.4-prelaunchReport this question
A fictional weight is 48 kg and the exercise uses 0.5 mg/kg. What is the calculated amount?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
48 × 0.5 = 24 mg
Mathematical result for this practice example: 24 mg
Check the operation order, unit conversion and final unit before moving on.
seo-dbw-004Content 0.9.2.4-prelaunchReport this question
A fictional weight is 80 kg and the exercise uses 1.5 mg/kg. What is the calculated amount?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
80 × 1.5 = 120 mg
Mathematical result for this practice example: 120 mg
Check the operation order, unit conversion and final unit before moving on.
seo-iv-001Content 0.9.2.4-prelaunchReport this question
A fictional 1,000 mL volume is set over 8 hours. What is the rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
1,000 ÷ 8 = 125 mL/hour
Mathematical result for this practice example: 125 mL/hour
Check the operation order, unit conversion and final unit before moving on.
seo-iv-002Content 0.9.2.4-prelaunchReport this question
A fictional 500 mL volume is set over 4 hours. What is the rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
500 ÷ 4 = 125 mL/hour
Mathematical result for this practice example: 125 mL/hour
Check the operation order, unit conversion and final unit before moving on.
seo-iv-003Content 0.9.2.4-prelaunchReport this question
A fictional 250 mL volume is set over 2.5 hours. What is the rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
250 ÷ 2.5 = 100 mL/hour
Mathematical result for this practice example: 100 mL/hour
Check the operation order, unit conversion and final unit before moving on.
seo-iv-004Content 0.9.2.4-prelaunchReport this question
A fictional 120 mL volume is set over 1.5 hours. What is the rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
120 ÷ 1.5 = 80 mL/hour
Mathematical result for this practice example: 80 mL/hour
Check the operation order, unit conversion and final unit before moving on.
seo-it-001Content 0.9.2.4-prelaunchReport this question
A fictional 500 mL volume runs at 125 mL/hour. How long will it take?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
500 ÷ 125 = 4 hours
Mathematical result for this practice example: 4 hours
Check the operation order, unit conversion and final unit before moving on.
seo-it-002Content 0.9.2.4-prelaunchReport this question
A fictional 750 mL volume runs at 100 mL/hour. How long will it take?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
750 ÷ 100 = 7.5 hours
Mathematical result for this practice example: 7.50 hours
Check the operation order, unit conversion and final unit before moving on.
seo-it-003Content 0.9.2.4-prelaunchReport this question
A fictional 300 mL volume runs at 120 mL/hour. How long will it take?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
300 ÷ 120 = 2.5 hours
Mathematical result for this practice example: 2.50 hours
Check the operation order, unit conversion and final unit before moving on.
seo-it-004Content 0.9.2.4-prelaunchReport this question
A fictional 1,000 mL volume runs at 125 mL/hour. How long will it take?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
1,000 ÷ 125 = 8 hours
Mathematical result for this practice example: 8 hours
Check the operation order, unit conversion and final unit before moving on.
seo-dr-001Content 0.9.2.4-prelaunchReport this question
A fictional 500 mL volume uses a 20 gtt/mL set over 240 minutes. What is the exact drop rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
500 × 20 ÷ 240 = 41.67 gtt/min; a whole-drop exercise would round according to its stated rule
Mathematical result for this practice example: 41.67 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-002Content 0.9.2.4-prelaunchReport this question
A fictional 1,000 mL volume uses a 15 gtt/mL set over 480 minutes. What is the exact drop rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
1,000 × 15 ÷ 480 = 31.25 gtt/min
Mathematical result for this practice example: 31.25 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-003Content 0.9.2.4-prelaunchReport this question
A fictional 250 mL volume uses a 20 gtt/mL set over 120 minutes. What is the exact drop rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
250 × 20 ÷ 120 = 41.67 gtt/min
Mathematical result for this practice example: 41.67 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-004Content 0.9.2.4-prelaunchReport this question
A fictional 600 mL volume uses a 20 gtt/mL set over 300 minutes. What is the exact drop rate?
Show worked answer
Formula or method: Choose the formula that matches the requested unit.
Substitution and working:
600 × 20 ÷ 300 = 40 gtt/min
Mathematical result for this practice example: 40 gtt/min
Check the operation order, unit conversion and final unit before moving on.
Continue practising
Related learning
Content status and sources
This page is an original DosePractice public-beta learning resource. It remains subject to continuing educational, regulatory and editorial review; corrections are published when issues are identified.
- Nursing and Midwifery Council programme standards require health numeracy assessment related to medicine calculation, but DosePractice is not an NMC assessment or approved programme.
- Formula presentation should be independently reviewed against current tutor-approved or institutional teaching material before search indexing is enabled.
Review references
- NMC standards for pre-registration nursing programmes
- University of Southampton drug-calculation learning guide
- York St John University nursing formula sheet
Read the DosePractice content-review approach or report a problem.