Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s)
I can use short multiplication to record regrouping from the 10s to the 100s
Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s)
I can use short multiplication to record regrouping from the 10s to the 100s
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Lesson details
Key learning points
- If the product of the single digit and the tens number is greater than 100 then you regroup ten tens into one hundred.
- Record the additional hundred or hundreds in the hundreds column, one column to the left of the tens digits.
- Short multiplication results in only one product being recorded.
- There are similarities and differences between the expanded recording and short multiplication.
Keywords
Short multiplication - A method using columns to set out and calculate a multiplication is short multiplication.
Regroup - The process of unitising and exchanging between place values is known as regrouping.
Common misconception
Pupils may not align or regroup correctly leading to an inaccurate calculation.
Reiterate that if the product of the single digit and the tens number is greater than 100 then you regroup ten tens into one hundred.
To help you plan your year 5 maths lesson on: Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s), 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 short multiplication (regrouping 10s to 100s), 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 primary maths curriculum, or learn more about lesson planning.
Licence
Prior knowledge starter quiz
6 Questions
Q1.630 can be partitioned as __________.
Q2.Lucas is chanting his 5 times tables: 5, 10, 15, ___. What comes next?
Q3.Lucas is chanting his 5 times tables in descending order: 60, 55, 50, . What comes next?
Q4.Use short multiplication to calculate this question: 37 × 2 =
Q5.Calculate and sort the multiplication equations into descending order.
Q6.Use short multiplication to solve this question: Jacob has 29 packets of sweets. Each packet has 3 sweets. How many sweets does her have altogether?
Assessment exit quiz
6 Questions
Q1.Select the correct short multiplication for this representation.

Q2.Select the correct short multiplication for this representation.



Q3.Which short multiplication is correct for: 52 × 3 =



Q4.Look at the short multiplication. True or false: You will need to regroup in the 10s.

Q5.The product is 205 which is the correct short multiplication?



Q6.Find the missing factor.
