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Year 3 Mathematics · Measuring with metric units

Name: ______________________

Date: ____________

1. Which unit is best for measuring the length of a pencil?
- ☐ (a) metres
- ☐ (b) centimetres
- ☐ (c) kilograms
- ☐ (d) litres
2. How many centimetres are in 1 metre?
3. Which is heavier: 1 kg of flour or 500 g of rice?
- ☐ (a) they are the same
- ☐ (b) 500 g of rice
- ☐ (c) 1 kg of flour
4. How many millilitres are in 1 litre?
5. Which of these is most likely to hold about 1 litre?
- ☐ (a) a teaspoon
- ☐ (b) a small carton of milk
- ☐ (c) a bathtub
- ☐ (d) an egg cup
6. A piece of string is 60 cm long. Tom cuts off 35 cm. How many centimetres of string are left?
7. A leaf is placed on a ruler. One end is at the 3 cm mark and the other end is at the 11 cm mark. How long is the leaf?
- ☐ (a) 11 cm
- ☐ (b) 14 cm
- ☐ (c) 8 cm
- ☐ (d) 3 cm
8. A bag of apples has a mass of 2 kg and a bag of potatoes has a mass of 3 kg. What is their total mass in kilograms?

Answer sheet

1. centimetres — A pencil is short, so centimetres are best. Kilograms measure mass and litres measure capacity.
2. 100 — 1 metre = 100 centimetres.
3. 1 kg of flour — 1 kg = 1000 g, and 1000 g is more than 500 g, so the flour is heavier.
4. 1000 — 1 litre = 1000 millilitres.
5. a small carton of milk — Small milk cartons are often 1 L. A teaspoon and an egg cup hold much less, and a bathtub holds far more.
6. 25 — 60 − 35 = 25. Count on from 35 to 60: 5 to get to 40, then 20 more to 60, which is 25.
7. 8 cm — The leaf does not start at 0, so find the difference: 11 − 3 = 8 cm.
8. 5 kg — 2 kg + 3 kg = 5 kg.