Introduction to Capacity

Hello, Year 4! Today, we are going to learn about something very important in maths: converting units of capacity. Capacity is how much liquid a container can hold. We often measure capacity in litres (L) and millilitres (mL).

Understanding Litres and Millilitres

  1. Litres (L): This is a larger unit. You might see it on drinks like bottles of juice or milk. For example, a large bottle of water might say it holds 2 litres.
  2. Millilitres (mL): This is a smaller unit. There are 1,000 millilitres in 1 litre. Think of millilitres as smaller drops of liquid. For example, a small bottle of water might hold 500 mL.

Key Rule to Remember

  • 1 Litre = 1,000 Millilitres

This means if you have 1 litre of water, you can also say you have 1,000 millilitres of water.

Converting Units of Capacity

How to Convert Litres to Millilitres

To convert litres to millilitres, you multiply by 1,000.

Example:

If you have 2 litres of juice, how many millilitres is that?

$$2 \text{ L} \times 1,000 = 2,000 \text{ mL}$$

How to Convert Millilitres to Litres

To convert millilitres to litres, you divide by 1,000.

Example:

If you have 500 millilitres of milk, how many litres is that?

$$500 \text{ mL} \div 1,000 = 0.5 \text{ L}$$

Tips and Tricks

  • Think of a Bottle: Picture a 1-litre bottle. It helps to remember that it holds 1,000 millilitres.
  • Practice with Water: Use measuring cups at home. See how many millilitres fit in a litre.
  • Use Visuals: Draw pictures of containers with their capacities labelled. This helps you visualise the differences between litres and millilitres.

Questions to Practice Converting Units of Capacity

Easy Level Questions

  1. How many millilitres are in 1 litre?
  2. Convert 3 litres to millilitres.
  3. Convert 500 millilitres to litres.
  4. How many millilitres are in 2 litres?
  5. How many litres are in 250 millilitres?
  6. Convert 1.5 litres to millilitres.
  7. Convert 750 millilitres to litres.
  8. How many millilitres are in 5 litres?
  9. Convert 2,000 millilitres to litres.
  10. How many litres are in 1,000 millilitres?
  11. Convert 0.75 litres to millilitres.
  12. How many millilitres are in 4 litres?
  13. Convert 300 millilitres to litres.
  14. How many litres are in 1,500 millilitres?
  15. Convert 0.25 litres to millilitres.
  16. How many millilitres are in 3 litres?
  17. Convert 600 millilitres to litres.
  18. How many litres are in 2,500 millilitres?
  19. Convert 1 litre to millilitres.
  20. How many millilitres are in 10 litres?

Medium Level Questions

  1. Convert 4 litres to millilitres.
  2. How many litres are in 1,200 millilitres?
  3. If you have 2.5 litres, how many millilitres do you have?
  4. Convert 1,800 millilitres to litres.
  5. How many millilitres are in 7 litres?
  6. Convert 900 millilitres to litres.
  7. If you have 0.5 litres, how many millilitres do you have?
  8. Convert 3.5 litres to millilitres.
  9. How many litres are in 1,750 millilitres?
  10. Convert 150 millilitres to litres.
  11. How many millilitres are in 8 litres?
  12. Convert 2.2 litres to millilitres.
  13. If you have 3,000 millilitres, how many litres is that?
  14. Convert 1.2 litres to millilitres.
  15. How many litres are in 600 millilitres?
  16. Convert 4.5 litres to millilitres.
  17. How many millilitres are in 9 litres?
  18. Convert 5000 millilitres to litres.
  19. If you have 1.8 litres, how many millilitres do you have?
  20. Convert 2500 millilitres to litres.

Hard Level Questions

  1. If you have 5.75 litres, how many millilitres do you have?
  2. Convert 2,750 millilitres to litres.
  3. How many litres are in 3,600 millilitres?
  4. Convert 0.8 litres to millilitres.
  5. If you have 0.125 litres, how many millilitres is that?
  6. Convert 6.7 litres to millilitres.
  7. How many millilitres are in 15 litres?
  8. Convert 3,500 millilitres to litres.
  9. If you have 2.9 litres, how many millilitres do you have?
  10. Convert 4.75 litres to millilitres.
  11. How many litres are in 2,250 millilitres?
  12. Convert 1.6 litres to millilitres.
  13. If you have 10,000 millilitres, how many litres is that?
  14. Convert 0.02 litres to millilitres.
  15. How many millilitres are in 12 litres?
  16. Convert 5.5 litres to millilitres.
  17. If you have 7.5 litres, how many millilitres do you have?
  18. Convert 8,500 millilitres to litres.
  19. How many litres are in 4,800 millilitres?
  20. Convert 1.3 litres to millilitres.

Answers and Explanations

Easy Level Answers

  1. 1,000 mL
  2. 3,000 mL
  3. 0.5 L
  4. 2,000 mL
  5. 0.25 L
  6. 1,500 mL
  7. 0.75 L
  8. 5,000 mL
  9. 2 L
  10. 1 L
  11. 750 mL
  12. 4,000 mL
  13. 0.3 L
  14. 1.5 L
  15. 250 mL
  16. 3,000 mL
  17. 0.6 L
  18. 2.5 L
  19. 1,000 mL
  20. 10,000 mL

Medium Level Answers

  1. 4,000 mL
  2. 1.2 L
  3. 2,500 mL
  4. 1.8 L
  5. 7,000 mL
  6. 0.9 L
  7. 500 mL
  8. 3,500 mL
  9. 1.75 L
  10. 0.15 L
  11. 8,000 mL
  12. 2,200 mL
  13. 3 L
  14. 1,200 mL
  15. 0.6 L
  16. 4,500 mL
  17. 9,000 mL
  18. 5 L
  19. 1.8 L
  20. 2.5 L

Hard Level Answers

  1. 5,750 mL
  2. 2.75 L
  3. 3.6 L
  4. 800 mL
  5. 125 mL
  6. 6,700 mL
  7. 15,000 mL
  8. 3.5 L
  9. 2,900 mL
  10. 4,750 mL
  11. 2.25 L
  12. 1,600 mL
  13. 10 L
  14. 20 mL
  15. 12,000 mL
  16. 5,500 mL
  17. 7,500 mL
  18. 8.5 L
  19. 4.8 L
  20. 1,300 mL

Great job learning about converting units of capacity today! Remember, practice makes perfect!