Leaks and Fills Practice Test Worksheets

Build confidence with printable volume, capacity, and flow-rate maths worksheets. These focused practice tests help students master litres and millilitres conversions, rate and time calculations, and multi-step word problems.

For students who understand multiplication and division, but need focused practice choosing the right rate formula and converting capacity units.

Leaks and Fills printable volume and flow-rate practice papers
Printable practice test worksheets
3 test sets - 90 questions in total
Full answer keys included
Instant Etsy download
Buy the 90-Question Worksheet Pack

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The Rules Every Leaks and Fills Question Uses

Identify the missing quantity, match the units, then use the corresponding relationship between volume, rate, and time.

💧 Rule 1: Volume = Rate × Time

Multiply the amount flowing each minute by the number of minutes to find the total volume added or lost.

100 ml/min × 25 min = 2,500 ml

Example: 100 ml per minute for 25 minutes = 2,500 ml.

⏱️ Rule 2: Time = Volume ÷ Rate

Divide the container capacity by the amount flowing each minute when the question asks how long filling or draining takes.

1,500 ml ÷ 100 ml/min = 15 min

Example: 1,500 ml ÷ 100 ml per minute = 15 minutes.

🚰 Rule 3: Rate = Volume ÷ Time

Divide total volume by total time when the flow rate is unknown.

5 min 4,000 ml ÷ 5 min = 800 ml/min

Example: 4,000 ml ÷ 5 minutes = 800 ml per minute.

🔄 Rule 4: Match Units Before Calculating

Convert litres and millilitres before using a formula. One litre equals 1,000 millilitres.

1 litre 1,000 ml 7.5 L = 7,500 ml

Example: 7.5 litres = 7,500 ml.

3 Worked Leaks and Fills Examples

One straightforward, one unit-conversion question, and one classic mistake to avoid.

Easy

A tap uses 13 litres of water per minute. How many litres are used in 10 minutes?

13 litres/min × 10 min = 130 litres Rate × time = total volume

Worked Method

Rate: 13 litres per minute. Time: 10 minutes.

Volume = Rate × Time: 13 × 10 = 130 litres.

Tip: The units already match, so no conversion is needed.

Medium

A pipe fills a 7.5-litre pitcher at 75 ml per minute. How long will filling take?

7.5 L 7.5 L = 7,500 ml 7,500 ÷ 75 = 100 min Convert, then divide by the flow rate

Worked Method

Convert first: 7.5 litres = 7,500 ml.

Time = Volume ÷ Rate: 7,500 ÷ 75 = 100 minutes.

Tip: A rate in millilitres per minute needs a volume in millilitres.

Classic Trap

An 8-litre bucket fills at 250 ml per minute. After 8 minutes, how much more water is needed?

8 L capacity 2 L added 6 L still needed 250 ml/min × 8 min = 2,000 ml 8,000 ml - 2,000 ml = 6,000 ml Answer: 6 litres Subtract amount added from full capacity

Worked Method

Convert capacity: 8 litres = 8,000 ml.

Find water already added: 250 × 8 = 2,000 ml.

Subtract from capacity: 8,000 - 2,000 = 6,000 ml = 6 litres.

Tip: The question asks for the water still needed, not the water already added.

Before You Buy

Want to check the level and layout first? Download the free 3-question sample. It uses the same question style, printable format, and answer-key approach as the full pack.

Download Free Sample PDF

Get the Full Practice Pack

The full Leaks and Fills pack contains 90 questions across 3 printable test sets. Students practise volume, capacity, flow rates, time calculations, and litre-to-millilitre conversions.

Key learning benefits for Leaks and Fills worksheets
📄 3 printable test sets
💧 90 leaks and fills questions
✅ Full answer sheets included
🖨️ Instant download printable PDF
Buy the Full Practice Pack

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