Subtract two-digit numbers crossing the tens boundary
I can subtract two-digit numbers crossing the tens boundary.
Subtract two-digit numbers crossing the tens boundary
I can subtract two-digit numbers crossing the tens boundary.
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
These resources were created for remote use during the pandemic and are not designed for classroom teaching.
Lesson details
Key learning points
- When subtracting, the known part of the whole can be partitioned further to subtract the tens and the ones separately.
- Partitioning both the whole and the parts when subtracting gives a 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 spot a pattern and be able to continue it based on noticing numbers simply increasing or decreasing without making the generalisations needed to understand why this happens.
Encourage children to articulate not only the pattern, but also why it has occurred, at first using practical equipment to prove it, then mentally visualising and manipulating the numbers involved.
To help you plan your year 2 maths lesson on: Subtract two-digit numbers crossing the tens boundary, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 2 maths lesson on: Subtract two-digit numbers crossing the tens boundary, 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
Loading...
Starter quiz
6 Questions
Exit quiz
6 Questions
38
42
58