Multiply a 2-digit number by a 1-digit number using partitioning and representations (two regroups)
Lesson details
Learning outcome
I can use partitioning and place value equipment to represent multiplication.
Key learning points
- Place value resources can be used to represent multiplication of a 2-digit by a 1-digit number.
- Regroup from the ones to the tens if the product of the tens is greater than 10
- Regroup from the tens to the hundreds if the product of the tens is greater than 100
Keywords
Product - The result of two or more numbers multiplied together.
Regrouping - The process of unitising and exchanging between place values.
Common misconception
Pupils may not regroup correctly.
Encourage pupils to use the stem sentences / array to identify when they may need to regroup.
Teacher tip
Allow pupils plenty of opportunities to sketch grid models for themselves to represent a range of equations.
Content guidance
Risk assessment required - equipment
Supervision
Adult supervision required
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Lucas is chanting his 3 times tables: 3, 6, 9, What comes next?
Q2.Which grid model represents the multiplication equation 35 × 3?
Q3.Which multiplication is represented by the grid model?
Q4.Aisha is working out 23 × 4. Fill in the gap shown in the grid model.
Q5.You are calculating 23 × 4. How many ones will you have altogether?
Q6.Look at the grid model. What is the product of 23 × 4?
Assessment exit quiz
6 Questions
Q1.Which grid shows 46 × 4
Q2.What is the multiplication shown in this grid model?
Q3.Aisha begins to represent 52 x 5 using grid model. What number is missing?
Q4.Aisha represents 52 x 5 using grid model. What number is missing?
Q5.Match the multiplication with the instances of regrouping.
Regrouping in ones and tens
Regrouping in tens
Regrouping in ones
Q6.Look at the grid model. What is the product?
To help you plan your 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using partitioning and representations (two 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 partitioning and representations (two 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.