P4 Maths: Area Units And Conversion (Paper 2 (intermediate))

P4 Maths: Area Units and Conversion (Paper 2 (intermediate))

2026-11-15

Tutor Prep Guide · How square metres and square centimetres relate, which way to multiply or divide when converting area units, keeping side length apart from area, comparing areas given in different units, and diagnosing common slips

P4 Maths: Area Units and Conversion (Paper 2 (intermediate))

Ten area unit conversion questions on square metres and square centimetres, square kilometres, mixed measurements and comparing areas, with answers and one-line notes.

Level: Primary 4 Maths; format: converting area units, splitting mixed measurements, comparing areas, finding a missing side and diagnosing wrong work.　Primary 4 area unit conversion practice: ten questions on 1 square metre = 10 000 square centimetres, square kilometres, mixed measurements, comparing areas and common slips, each with an answer and a one-line note.

01　Paper details (check answers afterwards)

Item	Detail
Questions	10
Suggested time	20
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: P4 Maths: Area Units and Conversion
Level	P4

02　Questions (10 items)

FoundationHow many square metres are there in 1 square kilometre?
FoundationHow many square centimetres are there in 7 square metres?
FoundationHow many square metres are there in 350 000 square centimetres?
IntermediateWhat is 3 square metres 4 000 square centimetres in square centimetres?
IntermediateA strip is 2 m 50 cm long and 80 cm wide. What is its area in square centimetres?
IntermediateWhich is larger, 1.2 square metres or 11 500 square centimetres, and by how much?
ChallengeHow many square centimetres are there in 0.35 square metres?
ChallengeA room is 5 m by 4 m and is tiled with 50 cm square tiles. How many tiles are needed?
ChallengeA wall has an area of 2.4 square metres and uses 250 mL of paint per square metre. How much paint is needed?
Error redoA student treated 1 square metre as 100 square centimetres and got 6 square metres = 600 square centimetres. What is the correct answer?

03　Answers and one-line notes

#	Answer	One-line note
1	1 000 000 square metres.	One kilometre is 1 000 metres, so 1 000 x 1 000 gives 1 000 000.
2	70 000 square centimetres.	Each square metre is 10 000 square centimetres, so 7 x 10 000 = 70 000.
3	35 square metres.	Divide by 10 000: 350 000 / 10 000 = 35.
4	34 000 square centimetres.	Change 3 square metres to 30 000 square centimetres, then add 4 000.
5	20 000 square centimetres, that is 2 square metres.	Make the units match first: 2 m 50 cm is 250 cm, and 250 x 80 = 20 000 square centimetres.
6	1.2 square metres is larger by 500 square centimetres.	1.2 square metres is 12 000 square centimetres, and 12 000 – 11 500 = 500.
7	3 500 square centimetres.	Multiply 0.35 by 10 000 to get 3 500; under half a square metre means under 5 000.
8	80 tiles.	The floor is 20 square metres, that is 200 000 square centimetres; each tile is 2 500 square centimetres, so 200 000 / 2 500 = 80.
9	600 mL.	Multiply 2.4 by 250 to get 600, since the amount per square metre is repeated for every square metre.
10	60 000 square centimetres.	One square metre is 10 000 square centimetres, so 6 x 10 000 = 60 000, a hundred times larger.

04　What to do after marking

After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
Repeat the same item two days later; move to the next paper only when both attempts are correct.
Parents only need the answer and note columns; there is no need to explain every item.

Ask first whether the figure is a length or an area. Lengths convert by 100, while areas convert by 100 twice, that is 10 000. When one side is in metres and the other in centimetres, match the units before multiplying, convert both sides to the same unit before comparing, and always finish by checking the square unit in the answer.Tutor Registration →

Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.