New
New
Review using column subtraction with regrouping from tens to ones
I can use column subtraction with regrouping from the tens to ones.
Lesson 13 of 15
New
New
- Year 4
Review using column subtraction with regrouping from tens to ones
I can use column subtraction with regrouping from the tens to ones.
Lesson details
Key learning points
- Regroup when the ones digit of the subtrahend is greater than the ones digit of the minuend.
- Regroup a ten into 10 ones.
- Change the number of ones and tens in the minuend.
Keywords
Column subtraction - Column subtraction is a way of subtracting numbers by writing a number below another.
Regrouping - The process of unitising and exchanging between place values is known as regrouping.
Common misconception
Pupils may not understand how regrouping works with column subtraction.
Emphasise with pupils the size of the digits, referring to the tens and the ones. Model using Base 10 blocks so that pupils understand how regrouping works with column subtraction.
Pupils need to be familiar with column subtraction where no regrouping is needed before they start this learning. Pupils may need more support with understanding the concept of regrouping. Encourage them to use Base 10 blocks, including with 3-digit numbers, to help them grasp this.
Teacher tip
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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Prior knowledge starter quiz
6 Questions
Q1.Complete the column subtraction by finding the difference.
Complete the column subtraction by finding the difference.
Q2.Which number is the difference in this column subtraction?
Which number is the difference in this column subtraction?
Q3.Find the missing tens digit from the column subtraction.
Find the missing tens digit from the column subtraction.
Q4.Find the missing tens digit from the column subtraction.
Find the missing tens digit from the column subtraction.
Q5.Which two numbers could be used to make this column subtraction correct?
Which two numbers could be used to make this column subtraction correct?
67
54
Q6.Which two numbers could be used to make this column subtraction correct?
Which two numbers could be used to make this column subtraction correct?
987
766
Assessment exit quiz
6 Questions
Q1.Which of these subtraction calculations need regrouping from the tens to the ones?
Which of these subtraction calculations need regrouping from the tens to the ones?
B
Q2.Complete the column subtraction. What is the difference between the two numbers?
Complete the column subtraction. What is the difference between the two numbers?
Q3.Complete the column subtraction. What is the difference between the two numbers?
Complete the column subtraction. What is the difference between the two numbers?
Q4.Find the missing difference.
Find the missing difference.
Q5.Find the missing ones digit in the column subtraction.
Find the missing ones digit in the column subtraction.
Q6.Find the missing ones digit in the column subtraction.
Find the missing ones digit in the column subtraction.
