Composition of 100 in 50s, 25s and 20s
I can compose 100 in 50s, 25s and 20s.
Composition of 100 in 50s, 25s and 20s
I can compose 100 in 50s, 25s and 20s.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- 100 can be divided into equal parts
- There are two 50s in 100
- There are four 25s in 100
- There are five 20s in 100
Keywords
Compose - You can compose larger numbers from smaller numbers.
Decompose - You can decompose whole numbers into smaller numbers.
Common misconception
Pupils may believe only multiples of 10 can compose 100 and therefore do not see four groups of 25.
Focus on practical representations e.g. bead strings and base 10 blocks where 100 can be composed and decomposed.
To help you plan your year 3 maths lesson on: Composition of 100 in 50s, 25s and 20s, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 3 maths lesson on: Composition of 100 in 50s, 25s and 20s, 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.
Explore more key stage 2 maths lessons from the Securing place value to 100 and applying to addition and subtraction unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
80
30
100
70
50
Exit quiz
6 Questions

