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Physical quantities and units – practice for Years 6–7

Sample questions on Physical quantities and units with the right answer and a worked solution, from easy to hard. In the Pickles Academy app a child gets new questions of the same kind every time, so they can't just learn the answers by heart.

Subject
Physics
Year
Years 6–7
Curriculum area
Matter and objects

Question types: Convert the units

Rule: Physical quantities and units

To a smaller unit multiply, to a bigger one divide. 1 h = 60 min = 3600 s, 1 km = 1000 m, 1 kg = 1000 g, 1 l = 1 dm³.

Prefixes: kilo (k) = a thousand, milli (m) = a thousandth, centi (c) = a hundredth.

Example: 2.5 h = 2.5 × 60 min = 150 min

Watch out: Decimal hours are not minutes: 1.5 h = 1 h 30 min = 90 min, not 1 h 50 min.

Sample questions

  1. Question 1 Easy

    Convert: 8 m = ? cm

    Show the solution
    Answer: 800 cm

    How it works: 1 m = 100 cm; 8 × 100 = 800 cm.

  2. Question 2 Normal

    Convert: 4 m = ? mm

    Show the solution
    Answer: 4000 mm

    How it works: 1 m = 1000 mm; 4 × 1000 = 4000 mm.

  3. Question 3 Hard

    Convert: 0.4 m³ = ? dm³

    Show the solution
    Answer: 400 dm³

    How it works: 1 m³ = 1000 dm³; 0.4 × 1000 = 400 dm³.

Related topics

All Physics topics

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