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About Measurement & Units — Class 6 IB

Measure length, mass, capacity, and time; convert between metric units. This topic is part of the IB Class 6 mathematics syllabus (chapter: Unit 7). On this page you can practice 60 questions across three difficulty levels — 20 easy, 20 medium, and 20 hard — each with a visual step-by-step solution, plus a timed 35-question mastery test with a live leaderboard. Worked examples and sample questions from the topic are below.

Measurement & Units — solved examples for Class 6 IB

Example 1easy

Convert 3 km to metres.
  1. A)30 m
  2. B)300 m
  3. C)3,000 m
  4. D)30,000 m

Step-by-step solution

  1. Convert:
    3×1000=3000 m3 \times 1000 = 3000 \text{ m}

Answer: 3,000 m

Example 2medium

A fence is 2.4 km long. How many metres is this?
  1. A)240 m
  2. B)2,400 m
  3. C)24,000 m
  4. D)24 m

Step-by-step solution

  1. Convert:
    2.4×1000=2400 m2.4 \times 1000 = 2400 \text{ m}

Answer: 2,400 m

Example 3hard

A car travels at 80 km/h. How far does it travel in 45 minutes?
  1. A)50 km
  2. B)55 km
  3. C)60 km
  4. D)65 km

Step-by-step solution

  1. Distance:
    80×0.75=60 km80 \times 0.75 = 60 \text{ km}

Answer: 60 km

Practice questions on Measurement & Units

  1. Q1.easy

    How many centimetres are in 2.5 metres?
    1. A)25 cm
    2. B)250 cm
    3. C)2,500 cm
    4. D)0.25 cm
    Show answer

    Answer: 250 cm

    Hint: 1 m = 100 cm.

  2. Q2.easy

    Convert 4,500 g to kilograms.
    1. A)0.45 kg
    2. B)4.5 kg
    3. C)45 kg
    4. D)450 kg
    Show answer

    Answer: 4.5 kg

    Hint: 1 kg = 1,000 g. Divide by 1000.

  3. Q3.easy

    How many millilitres are in 3 litres?
    1. A)30 ml
    2. B)300 ml
    3. C)3,000 ml
    4. D)30,000 ml
    Show answer

    Answer: 3,000 ml

    Hint: 1 litre = 1,000 ml.

  4. Q4.medium

    A recipe needs 350 ml of milk. How many litres is this?
    1. A)0.035 L
    2. B)0.35 L
    3. C)3.5 L
    4. D)35 L
    Show answer

    Answer: 0.35 L

    Hint: Divide by 1000.

  5. Q5.medium

    Add: 2 km 450 m + 3 km 780 m.
    1. A)5 km 230 m
    2. B)6 km 130 m
    3. C)6 km 230 m
    4. D)5 km 130 m
    Show answer

    Answer: 6 km 230 m

    Hint: Add metres: 450 + 780 = 1230 m = 1 km 230 m.

  6. Q6.medium

    A film lasts 2 hours 15 minutes. How many minutes is that?
    1. A)125 min
    2. B)130 min
    3. C)135 min
    4. D)215 min
    Show answer

    Answer: 135 min

    Hint: 2 × 60 + 15.

  7. Q7.hard

    A field is 250 m long and 180 m wide. Express the perimeter in km.
    1. A)0.43 km
    2. B)0.86 km
    3. C)4.3 km
    4. D)8.6 km
    Show answer

    Answer: 0.86 km

    Hint: Perimeter = 2(250 + 180) = 860 m. Convert to km.

  8. Q8.hard

    A tank fills at 2.5 litres per minute. How long to fill a 150-litre tank?
    1. A)50 min
    2. B)55 min
    3. C)60 min
    4. D)75 min
    Show answer

    Answer: 60 min

    Hint: Time = volume ÷ rate.

  9. Q9.hard

    Express 2 hours 45 minutes 30 seconds in seconds.
    1. A)9,900 s
    2. B)9,930 s
    3. C)10,530 s
    4. D)9,870 s
    Show answer

    Answer: 9,930 s

    Hint: Convert hours and minutes to seconds, then add.

These are 9 of the 60 questions available for Measurement & Units. Start practicing above to unlock visual solutions, AI coaching, and the topic leaderboard — completely free.