Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s)
I can use short multiplication to record regrouping from the 10s to the 100s
Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s)
I can use short multiplication to record regrouping from the 10s to the 100s
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- If the product of the single digit and the tens number is greater than 100 then you regroup ten tens into one hundred.
- Record the additional hundred or hundreds in the hundreds column, one column to the left of the tens digits.
- Short multiplication results in only one product being recorded.
- There are similarities and differences between the expanded recording and short multiplication.
Keywords
Short multiplication - A method using columns to set out and calculate a multiplication is short multiplication.
Regroup - The process of unitising and exchanging between place values is known as regrouping.
Common misconception
Pupils may not align or regroup correctly leading to an inaccurate calculation.
Reiterate that if the product of the single digit and the tens number is greater than 100 then you regroup ten tens into one hundred.
To help you plan your year 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s), download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s), 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 Multiplication by partitioning leading to short multiplication (2 by 1-digit) 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
Exit quiz
6 Questions
