Let's solve this
Metric Units Worksheet step by step. The goal is to choose the
most appropriate unit of measure from the given list for each item.
The available units are:
-
kg (kilograms) – for mass/weight
-
cm (centimeters) – for length
-
ml (milliliters) – for small volumes
-
km (kilometers) – for long distances
-
mm (millimeters) – for very small lengths
-
g (grams) – for small masses
-
m (meters) – for medium lengths
-
tonnes – for very heavy objects (1 tonne = 1000 kg)
-
litres – for larger volumes
---
a) The weight of a hippopotamus
✔ Tonnes
Hippopotamuses are extremely heavy animals, weighing over 1000 kg. So,
tonnes is the most appropriate unit.
---
b) The volume of juice in a glass
✔ ml (milliliters)
A glass of juice holds a small amount of liquid, typically around 200–300 ml. So,
ml is best.
---
c) The length of a motorway
✔ km (kilometers)
Motorways are very long roads, often hundreds of kilometers. So,
km is appropriate.
---
d) The height of your teacher
✔ m (meters)
Human height is usually measured in meters (e.g., 1.6 m, 1.8 m). So,
m is correct.
---
e) The volume of water in a bath
✔ litres
A bath holds a large amount of water — about 40–80 litres. So,
litres is the right unit.
---
f) The length of a ladybird
✔ mm (millimeters)
Ladybirds are very small insects, only a few millimeters long. So,
mm is best.
---
g) The weight of an orange
✔ g (grams)
An orange weighs about 150–200 grams. So,
g is appropriate.
---
h) The width of a swimming pool
✔ m (meters)
Swimming pools are wide but not too wide — usually 5–10 meters. So,
m is correct.
---
i) The weight of a dog
✔ kg (kilograms)
Dogs vary in size, but most weigh between 5 kg and 50 kg. So,
kg is the best unit.
---
j) The length of a book
✔ cm (centimeters)
Books are typically 20–30 cm long. So,
cm is appropriate.
---
✔ Final Answers:
| Item | Answer |
|------|--------|
| a) The weight of a hippopotamus |
tonnes |
| b) The volume of juice in a glass |
ml |
| c) The length of a motorway |
km |
| d) The height of your teacher |
m |
| e) The volume of water in a bath |
litres |
| f) The length of a ladybird |
mm |
| g) The weight of an orange |
g |
| h) The width of a swimming pool |
m |
| i) The weight of a dog |
kg |
| j) The length of a book |
cm |
---
Summary of Key Concepts:
- Use
mass units:
g (small),
kg (medium),
tonnes (very heavy)
- Use
length units:
mm (tiny),
cm (small),
m (medium),
km (long)
- Use
volume units:
ml (small liquids),
litres (larger amounts)
This worksheet helps students understand real-world applications of metric units.
Parent Tip: Review the logic above to help your child master the concept of metric units of measurement worksheet.
