Class: Primary 3
Term: 3rd Term
The amount of liquid a container holds is called its capacity.
Liquids are things like: water, milk, kerosene, oil, petrol, juice, mineral water, etc.
The standard measure for liquids is the litre l and millilitre ml
Liquids in large containers are measured in litres.
Petrol and diesel are measured in litres.
Liquids in small containers are measured in millilitres.
Syrups, lotions and perfumes are measured in millilitres.
Check the empty containers of liquids you used in your home. Bring in one that
has 1 litre written on it. Compare with your friends’ containers. Do they all have the
Capacity of containers
10 millilitres (ml) = 1 centilitre (cl)
10 centilitres (cl) = 1 decilitre (dl)
10 decilitres (ôô) = 1 litre (l)
1000 litres = 1 kilolitre (kl)
Container Measurement in litres
2. Cooking pot
3. Plastic basin
4. Big jerry can
5. Small jerry can
8. Water dispenser jar
9. Pure water sachet
This shows us how many 1/2litres there are in 1 1/2litres.
11/2litres = 1 litre + 1/2litre
1 litre = 2 one-half litres
Therefore, 11/2litres = 3 one-half litres
This shows us how many 1/4litres there are in 3 litres.
3 litres = 1l + 1l + 1l
1 litre = 4 one-quarter litres
Therefore, 3 litres = 3 × 4 one-quarter litres = 12 one-quarter litres
1. How many 1/2 litres are there in:
a) 3 litres b) 2 1/2litres c) 4 litres d) 6 litres?
2. How many 1/4litres are there in:
a) 11/2litres b) 4 litres c) 3 litres d) 21/4litres?
1 litre + 5 litre = 6 litres
1L + 5l = 6l
20 litres – 15 litres = 5 litres
40ml + 30ml = 70 ml
150ml – 130ml = 20ml
A. Add the following.
B. Subtract the following.
Problems involving capacity
Solve the problems. The first has been done for you.
Mr Salaam bought 12 litres
and he bought
Altogether, he bought
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