Multiply a 2-digit number by a 1-digit number using short multiplication (no regroups)
Lesson details
Learning outcome
I can multiply a 2-digit number by a 1-digit number using short multiplication (no regroups).
Key learning points
- Short multiplication is another way of representing 2-digit by 1-digit multiplication.
- There are similarities between the representations of multiplication.
- Arranging the factors in columns allows you to organise the partial products into a column addition.
Keywords
Short multiplication - A way of recording using columns to set out and calculate a multiplication.
Factor - A number that divides exactly into another number.
Common misconception
When using the short method, pupils may not align the digits correctly with the same place value.
Continue to ask what each digit that has been recorded represents, linking back to the place value chart.
Teacher tip
Ensure pupils have lots of opportunities to set out their own short multiplication layouts. Model the alignment of digits: you may wish to provide scaffolds for some learners initially to ensure accurate layout.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.When multiplying a 2-digit by a 1-digit number using expanded multiplication we usually place the __________ factor at the top.
Q2.Jacob is chanting his 6 times tables: 6, 12, 18, What comes next?
Q3.Izzy is chanting her 8 times tables: 8, 16, 24, What comes next?
Q4.Which is the correct arrangement for: 80 × 5
Q5.Find the missing partial product from the layout shown.
Q6.Look at the expanded multiplication layout. What is the missing factor?
Assessment exit quiz
6 Questions
Q1.Look at the image. The arrows are pointing to .
Q2.The multiplication is: 41 × 2 Which short multiplication shows this correctly?
Q3.Use short multiplication to calculate the answer to: 34 × 2
Q4.Use short multiplication to calculate the answer to: 31 × 3
Q5.Select the correct short multiplication method for this representation.
Q6.Numbers from this calculation have rubbed off. What could the missing number be?
To help you plan your 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using short multiplication (no regroups), download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using short multiplication (no regroups), 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 primary maths curriculum, or learn more about lesson planning.