How many items are in this paper?

Ten: three basic, three intermediate, three challenge and one redo item.

How long should it take?

About 20 to 30 minutes; finish under timing before checking.

Are the answers reliable?

Every value is computed and checked by program, each with a one-line explanation.

Are these past public examination questions?

No. All items are original and are not past papers or official marking schemes.

Which level is it for?

P5, for revising unit conversion and school tests.

P5 Maths Unit Conversion Paper 3: Challenge

2026-11-09

Tutor Prep Guide · P5 Maths

Ten original items for length, mass and capacity conversions.

Direct answers　Questions 1-3 are basic conversions, 4-6 intermediate items with addition, subtraction and two-step work, 7-9 are challenge items, and question 10 redoes the commonest wrong-multiplier error. Time yourself first, then check each answer.

01　Paper details (check answers afterwards)

Item	Detail
Questions	10
Suggested time	30
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: P5 Maths: Unit Conversion
Level	P5

02　Questions (10 items)

FoundationAdd 850 m to 2.4 km. Give the answer in kilometres.
FoundationHow many millilitres are there in 3 L 250 mL?
FoundationHow many metres are there in 4 km 500 m?
IntermediateSubtract 350 kg from 1.2 tonnes. Give the answer in kilograms.
Intermediate3 L 250 mL is shared equally into 5 cups. How many millilitres in each cup?
IntermediateSubtract 45 cm from 1.5 m. Give the answer in centimetres.
ChallengeWhat is 4 times 7.5 kg, in grams?
ChallengeWhat is 80 cm plus 1.2 m, in metres?
Challenge6 kg is divided equally into 8 portions. How many grams in each portion?
Error redoHow many metres are there in 3.2 kilometres? (Common error: 320)

03　Answers and one-line notes

#	Answer	One-line note
1	3.25 km	850 m = 0.85 km, and 2.4 + 0.85 = 3.25 km.
2	3250 mL	3 x 1000 + 250 = 3250 mL.
3	4500 m	4 x 1000 + 500 = 4500 m.
4	850 kg	1.2 tonnes = 1200 kg, and 1200 – 350 = 850 kg.
5	650 mL	Convert to 3250 mL first, then 3250 / 5 = 650 mL.
6	105 cm	1.5 m = 150 cm, and 150 – 45 = 105 cm.
7	30000 g	7.5 x 4 = 30 kg, and 30 x 1000 = 30000 g.
8	2 m	80 cm = 0.8 m, and 0.8 + 1.2 = 2 m.
9	750 g	6 kg = 6000 g, and 6000 / 8 = 750 g.
10	3200 m	1 km = 1000 m, so 3.2 x 1000 = 3200 m, not 320 m.

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.

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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.