20 Drops-per-Minute Practice Questions
Practise the arithmetic behind fictional manual drop-rate questions. The exact value is shown before any exercise-specific whole-number rounding.
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
gtt/min = (mL × gtt/mL) ÷ minutes
How to use these questions
Work each question on paper or in a separate note before opening the answer. Keep the units beside every number and write the formula before substituting values.
The questions are deliberately fictional and test arithmetic only. Real medicines, patient factors, limits, local policy and equipment checks are outside DosePractice’s purpose.
A repeatable checking method
- Identify what the question asks for and write its unit.
- Convert time or measurement units before calculating.
- Substitute values into the displayed formula.
- Estimate whether the answer should be larger or smaller than the starting values.
- Reveal the worked answer and compare every step, not only the final number.
20 practice questions
Try each fictional arithmetic question before opening its worked answer. Each item has a stable question ID and reporting link.
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: gtt/min = (mL × gtt/mL) ÷ minutes
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: gtt/min = (mL × gtt/mL) ÷ minutes
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: gtt/min = (mL × gtt/mL) ÷ minutes
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: gtt/min = (mL × gtt/mL) ÷ minutes
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.
seo-dr-005Content 0.9.2.4-prelaunchReport this question
A fictional 100 mL volume uses a 20 gtt/mL set over 60 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
100 × 20 ÷ 60 = 33.33 gtt/min
Mathematical result for this practice example: 33.33 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-006Content 0.9.2.4-prelaunchReport this question
A fictional 1,000 mL volume uses a 20 gtt/mL set over 600 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
1,000 × 20 ÷ 600 = 33.33 gtt/min
Mathematical result for this practice example: 33.33 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-007Content 0.9.2.4-prelaunchReport this question
A fictional 500 mL volume uses a 15 gtt/mL set over 300 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
500 × 15 ÷ 300 = 25 gtt/min
Mathematical result for this practice example: 25 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-008Content 0.9.2.4-prelaunchReport this question
A fictional 250 mL volume uses a 15 gtt/mL set over 150 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
250 × 15 ÷ 150 = 25 gtt/min
Mathematical result for this practice example: 25 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-009Content 0.9.2.4-prelaunchReport this question
A fictional 120 mL volume uses a 20 gtt/mL set over 60 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
120 × 20 ÷ 60 = 40 gtt/min
Mathematical result for this practice example: 40 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-010Content 0.9.2.4-prelaunchReport this question
A fictional 300 mL volume uses a 20 gtt/mL set over 180 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
300 × 20 ÷ 180 = 33.33 gtt/min
Mathematical result for this practice example: 33.33 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-011Content 0.9.2.4-prelaunchReport this question
A fictional 1,000 mL volume uses a 10 gtt/mL set over 480 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
1,000 × 10 ÷ 480 = 20.83 gtt/min
Mathematical result for this practice example: 20.83 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-012Content 0.9.2.4-prelaunchReport this question
A fictional 750 mL volume uses a 20 gtt/mL set over 360 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
750 × 20 ÷ 360 = 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-013Content 0.9.2.4-prelaunchReport this question
A fictional 500 mL volume uses a 10 gtt/mL set over 240 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
500 × 10 ÷ 240 = 20.83 gtt/min
Mathematical result for this practice example: 20.83 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-014Content 0.9.2.4-prelaunchReport this question
A fictional 240 mL volume uses a 15 gtt/mL set over 120 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
240 × 15 ÷ 120 = 30 gtt/min
Mathematical result for this practice example: 30 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-015Content 0.9.2.4-prelaunchReport this question
A fictional 100 mL volume uses a 15 gtt/mL set over 90 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
100 × 15 ÷ 90 = 16.67 gtt/min
Mathematical result for this practice example: 16.67 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-016Content 0.9.2.4-prelaunchReport this question
A fictional 200 mL volume uses a 20 gtt/mL set over 100 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
200 × 20 ÷ 100 = 40 gtt/min
Mathematical result for this practice example: 40 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-017Content 0.9.2.4-prelaunchReport this question
A fictional 400 mL volume uses a 20 gtt/mL set over 200 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
400 × 20 ÷ 200 = 40 gtt/min
Mathematical result for this practice example: 40 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-018Content 0.9.2.4-prelaunchReport this question
A fictional 900 mL volume uses a 15 gtt/mL set over 540 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
900 × 15 ÷ 540 = 25 gtt/min
Mathematical result for this practice example: 25 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-019Content 0.9.2.4-prelaunchReport this question
A fictional 150 mL volume uses a 20 gtt/mL set over 75 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
150 × 20 ÷ 75 = 40 gtt/min
Mathematical result for this practice example: 40 gtt/min
Check the operation order, unit conversion and final unit before moving on.
seo-dr-020Content 0.9.2.4-prelaunchReport this question
A fictional 60 mL volume uses a 20 gtt/mL set over 30 minutes. What is the exact drop rate?
Show worked answer
Formula or method: gtt/min = (mL × gtt/mL) ÷ minutes
Substitution and working:
60 × 20 ÷ 30 = 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.