Partition 3-digit numbers in different ways
Lesson details
Learning outcome
I can partition 3-digit numbers into 2 and 3 parts.
Key learning points
- Partitioning of 3-digit numbers can be represented using base ten blocks or bar models.
- 3-digit numbers can be partitioned into 2 or 3 parts in many different ways.
- Partititoning can be used to find missing parts or addends.
Keywords
Partition - Partition means splitting an object or value down into smaller parts.
Common misconception
Pupils may struggle when partitioning hundreds and tens (e.g. partitioning 340 into 220 and 120).
Give pupils opportunities to manipulate base ten blocks, rearranging them and partitioning both the hundreds and the tens.
Teacher tip
Pupils will find base ten blocks invaluable in this lesson. Giving them opportunities to manipulate these will develop their flexibility in partitioning 3-digit numbers.
Licence
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is 50 + 7?
Q2.What is 100 + 50?
Q3.What is value of the 3 in the number 347?
Q4.What is value of the 5 in the number 453?
Q5.200 + 200 =
Q6.What part is missing from the bar model?
Assessment exit quiz
6 Questions
Q1.Complete the calculation. 200 + ___ = 270
Q2.Which two numbers can 230 be partitioned into?
Q3.Calculate the missing part. 200 + + 40 = 340
Q4.What is the value of the missing part in the bar model?
Q5.Match the equations to their correct sums.
220
210
230
240
Q6.Which pair of numbers cannot be used to correctly complete the bar model?
To help you plan your 3 maths lesson on: Partition 3-digit numbers in different ways, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Partition 3-digit numbers in different ways, 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 Representing 3-digit numbers, comparing and positioning on number lines unit, dive into the full primary maths curriculum, or learn more about lesson planning.