Use knowledge of decimal place value to convert between and compare metres and centimetres
Lesson details
Learning outcome
I can use knowledge of decimal place value to convert between and compare metres and centimetres.
Key learning points
- There are 100cm in 1m.
- 1cm is one hundredth of a metre so you can write 1cm as 0.01m.
- 10cm is one tenth of a metre so you can write 10cm as 0.1m.
- Lengths of m and cm can be recorded using whole numbers and two decimal places.
Keywords
Metre - A metre is a measure of length that can be abbreviated as m.
Centimetre - A centimetre is a measure of length that can be abbreviated as cm.
Convert - To exchange a unit for an equivalent unit.
Common misconception
Pupils may write for example 3 cm as 0.3 m.
Make connections between the headings in the place value chart and images that represent metres, tenths of metres and centimetres.
Teacher tip
Make sure children have the opportunity to develop a sense of the size of a metre in comparison to a tenth of a metre and a centimetre. Avoid giving a procedural strategy to convert from one unit to another - instead work towards generalising this.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the name of the missing place value column? Give your answer as a word.
Q2.Look at the sequence. Write the missing number as a decimal. 0.27, 0.28, 0.29, , 0.31, 0.32
Q3.One metre is equivalent to:
Q4.0.63 can be described as:
Q5.Which of these representations does not represent 0.42?
Q6.Write this representation as a decimal number.
Assessment exit quiz
6 Questions
Q1.There are centimetres in 1 metre.
Q2.What is 3 hundredths of a metre written as a decimal number?
Q3.Write 27 hundredths of a metre as a decimal number: metres
Q4.If one green bar represents one metre, how many centimetres are shown in the picture.
Q5.Tick the values that are greater than 340 cm. Check the units carefully.
Q6.Tick the descriptions that match this image.
To help you plan your 5 maths lesson on: Use knowledge of decimal place value to convert between and compare metres and centimetres, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 5 maths lesson on: Use knowledge of decimal place value to convert between and compare metres and centimetres, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
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