Use column addition with regrouping in ones and tens
Lesson details
Learning outcome
I can use column addition with regrouping in the ones and tens.
Key learning points
- When using column addition, start by adding the numbers with the smallest place value first.
- Make sure that any regrouped 10s are added with the values in the tens column.
- Make sure that any regrouped 100s are added with the values in the hundreds column.
Keywords
Column addition - Column addition is a way of adding numbers by writing a number below another.
Regroup - The process of unitising and exchanging between place values is known as regrouping.
Common misconception
Pupils may forget to refer to the size of the numbers when adding and when regrouping.
Encourage pupils to talk about the place value of the digits. Ten ones can be regrouped as a ten; ten tens can be regrouped as a hundred.
Teacher tip
Pupils will need some familiarity regrouping ones and tens with column addition up to 3-digits. Sets of number cards (2-7) will be helpful for the second part of the lesson.
Licence
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.170 can be regrouped into…
Q2.9 + 8 =
Q3.What number is missing from this column addition?
Q4.What is the sum of the two numbers?
Q5.What number is missing from this column addition?
Q6.What tens digit is missing from this column addition?
Assessment exit quiz
6 Questions
Q1.Where will regrouping be needed in this column addition?
Q2.Where will regrouping be needed in this column addition?
Q3.Jun has started this column addition. Complete it to find the sum.
Q4.The same digit is missing from both boxes. What is the number?
Q5.What is the missing tens digit?
Q6.What is the missing sum?
To help you plan your 3 maths lesson on: Use column addition with regrouping in ones and tens, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Use column addition with regrouping in ones and tens, 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 Column addition unit, dive into the full primary maths curriculum, or learn more about lesson planning.