Multiply a 2-digit number by a 1-digit number using expanded multiplication (no regroups)
I can represent partitioning in a column method for expanded multiplication.
Multiply a 2-digit number by a 1-digit number using expanded multiplication (no regroups)
I can represent partitioning in a column method for expanded multiplication.
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Lesson details
Key learning points
- Knowledge of times tables and place value helps when multiplying 2-digit numbers.
- 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
Expanded multiplication - A way of recording the steps of a calculation focusing on partitioning one or more factors and showing partial products.
Partial product - Any of the multiplication results that lead up to an overall multiplication result.
Common misconception
When using the expanded method, pupils may not align the digits correctly with the same place value.
Use clear teacher modelling and continue to ask what each digit that has been recorded represents and link back to the place value chart.
To help you plan your year 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using expanded multiplication (no regroups), 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 expanded 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.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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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
80 + 2
80 + 6
80 + 8
Exit quiz
6 Questions
