New
New
Multiply a 2-digit number by a 1-digit number using partitioning
I can use partitioning to organise multiplication.
New
New
Multiply a 2-digit number by a 1-digit number using partitioning
I can use partitioning to organise multiplication.
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Lesson details
Key learning points
- When you partition and multiply the ones and then the tens you get partial products.
- When you add the partial products you calculate the overall product.
- Partitioning helps you to organise multiplication.
Keywords
Partial product - Any of the multiplication results we get leading up to an overall multiplication result.
Common misconception
Pupils may not record partitioned factors as tens and ones leading to incorrect calculation.
Encourage pupils to use the stem sentences to support their thinking. Use the language of ___ tens to support place value.
As pupils learn additional strategies and layouts for multiplication encourage them to begin to think about which is more appropriate and efficient in different situations.
Teacher tip
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2025), 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.
Match the key words with the correct definitions.
Numbers we can multiply together to get another number.
The answer when two or more values are multiplied together.
Moving an amount (usually 10) from one part of a calculation
Q2.
37 can be partitioned into tens and 7 ones
Q3.
79 can be partitioned into 7 tens and ones
Q4.
Find the product.
Q5.
Which grid represents the multiplication equation 37 × 3
picture 1
picture 2
picture 4
Q6.
True or false: you only need to regroup once when calculating 44 × 3.
True
Exit quiz
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6 Questions
Q1.
Look at the image. What is the name given to the purple values marked with a question mark?
factors
products
Q2.
Select the correct partial product sums for this multiplication: 14 × 4
40 + 2 + 2
4 + 16
16 + 20 + 20
Q3.
Select the correct partial products for 5 × 47
100 + 100 + 35
200 + 30 + 5
20 + 180 + 35
Q4.
Match the multiplication equation with the correct partial product pair.
80 + 24
120 + 24
200 + 16
Q5.
Choose the correct grid model which represents this informal method.
pic 1
pic 2
pic 3
Q6.
Select the correct informal method for the following question: Biscuits cost 27 p each. What is the total of 4 biscuits?
Additional material
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