Area and Measurement - Year 4 NSW

What is the area of a rectangle that measures 5 cm by 4 cm?

• 9 square cm

• 20 square cm

• 15 square cm

• 25 square cm

Why is area always measured in square units?

• Because it’s easier to calculate

• Because area involves two dimensions

• Because it looks better

• Because square units are smaller

If a desk has an area of 60 square centimetres, which of the following could be its possible dimensions?

• 5 cm by 12 cm

• 6 cm by 10 cm

• 4 cm by 15 cm

• All of the above

How would you estimate the area of an irregular shape using grid paper?

• Count all squares fully inside the shape

• Ignore partial squares

• Count each partial square as a full square

• Count all full and half squares

Which unit would you use to measure the area of a classroom floor?

• Square centimetres

• Square metres

• Square millimetres

• Square kilometres

A book has an area of 48 square centimetres. Which of the following could be its dimensions?

• 6 cm by 8 cm

• 12 cm by 4 cm

• 16 cm by 3 cm

• All of the above

Why might your estimate of an area differ from the actual measurement?

• Because estimation is never exact

• Because the shape might be irregular

• Because the measuring tools could be inaccurate

• All of the above

If you need to measure the area of a large farm, which unit would be the most appropriate?

• Square centimetres

• Square metres

• Square millimetres

• Square inches

How can you find the area of an L-shaped figure?

When comparing two areas, what should you always consider?

• The size of the shapes

• The unit of measurement used

• The shape of the objects

• All of the above