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Year 4 - Maths

Partitioning 1,000 in the context of measures

Calculation and conversion of measures

Unit Summary

In this unit pupils will use knowledge of 1000 to explain common measure conversions and solve problems.

Lesson Summary

You can partition 1,000 in the context of measures.

Key Notes

  • There are 1,000 g in a kg
  • There are 1,000 ml in a l
  • Milli means 1,000 times smaller
  • Kilo means 1,000 times larger

Vocabulary To Learn

  • metre (m) and millilitre (ml): A millimetre (mm) is a metric measure of distance used for small lengths. The basic unit of length (or distance) in the metric system is metre (m)
  • kilometre (km) and metre (m): A kilometre (km) is a metric measure of distance.
  • kilogram (kg) and gram (g): A kilogram is a measure of mass, equivalent to one thousand grams.
  • litre (l) and millilitre (ml): A litre is a measure of capacity, equivalent to one thousand millilitres.

Common Mistakes To Avoid

  • Pupils may miscalculate measures questions involving unit conversions if they are not secure with the key conversions of 1 m = 1,000 mm, 1 km = 1,000 m, 1 kg = 1,000 g and 1 l = 1,000 ml.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

There are 1,000 g in a kg. There are 1,000 ml in a l.

2. Use this key word in a maths sentence and explain it clearly. 'metre (m) and millilitre (ml)'

A millimetre (mm) is a metric measure of distance used for small lengths. The basic unit of length (or distance) in the metric system is metre (m). Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Pupils may miscalculate measures questions involving unit conversions if they are not secure with the key conversions of 1 m = 1,000 mm, 1 km = 1,000 m, 1 kg = 1,000 g and 1 l = 1,000 ml. Correction: Spend time discussing the etymology of the words so pupils are not necessarily relying on memory and can figure out the equivalences if they cannot recall them. 'Milli' means 'thousandth' and 'kilo' means 'thousand': both relate to a thousand parts.

More Lessons In This Unit

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