Review using column subtraction with regrouping from tens to ones
Lesson details
Learning outcome
I can use column subtraction with regrouping from the tens to ones.
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.
Teacher tip
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.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Complete the column subtraction by finding the difference.
Q2.Which number is the difference in this column subtraction?
Q3.Find the missing tens digit from the column subtraction.
Q4.Find the missing tens digit from the column subtraction.
Q5.Which two numbers could be used to make this column subtraction correct?
Q6.Which two numbers could be used to make this column subtraction correct?
Assessment exit quiz
6 Questions
Q1.Which of these subtraction calculations need regrouping from the tens to the ones?
Q2.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?
Q4.Find the missing difference.
Q5.Find the missing ones digit in the column subtraction.
Q6.Find the missing ones digit in the column subtraction.
To help you plan your 4 maths lesson on: Review using column subtraction with regrouping from tens to ones, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 4 maths lesson on: Review using column subtraction with regrouping from tens to ones, 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 Review of column addition and subtraction unit, dive into the full primary maths curriculum, or learn more about lesson planning.