New
New
Year 5
Multiply a 2-digit number by a 1-digit number using partitioning and representations (two regroups)
I can use partitioning and place value equipment to represent multiplication.
New
New
Year 5
Multiply a 2-digit number by a 1-digit number using partitioning and representations (two regroups)
I can use partitioning and place value equipment to represent multiplication.
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Lesson details
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.
Allow pupils plenty of opportunities to sketch grid models for themselves to represent a range of equations.
Teacher tip
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
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6 Questions
Q1.
Lucas is chanting his 3 times tables: 3, 6, 9, What comes next?
10
11
13
Q2.
Which grid model represents the multiplication equation 35 × 3?
pic 1
pic 3
Q3.
Which multiplication is represented by the grid model?
107 × 4
104 × 7
7 × 4
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?
Exit quiz
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6 Questions
Q1.
Which grid shows 46 × 4
pic 1
picture 3
Q2.
What is the multiplication shown in this grid model?
6 × 502
6 × 50
502 × 6
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?
Additional material
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