Solve problems involving subtraction of two-digit numbers
I can solve problems involving subtraction of two-digit numbers that do not cross the tens boundary.
Solve problems involving subtraction of two-digit numbers
I can solve problems involving subtraction of two-digit numbers that do not cross the tens boundary.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- When subtracting a 2-digit number, the known part can be partitioned to subtract the tens and the ones separately.
- Partitioning both the whole and the parts when subtracting gives an correct answer when the ones digits bridge 10
- The tens and ones can be subtracted in any order and the remaining part will stay the same.
Keywords
Partition - To split a whole up into parts - a piece or section of a whole.
Part - A piece or section of a whole.
Common misconception
Children may think that, when partitioned, the tens and ones must be subtracted in the same order as they occur in the two-digit number, e.g. that to subtract 34, you must subtract 30, then 4
Explore subtracting tens and ones in any order at this point, looking at the result of this and considering which they find easier.
To help you plan your year 2 maths lesson on: Solve problems involving subtraction of two-digit numbers, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Solve problems involving subtraction of two-digit numbers, 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 1 maths lessons from the Addition and subtraction of two 2-digit numbers unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
65 − 32
74 − 44
26 − 13
Exit quiz
6 Questions
