Review adding 2-digit numbers using column addition without regrouping
Lesson details
Learning outcome
I can add 2-digit numbers using column addition.
Key learning points
- The addends are written in columns with the same value digits in the same column.
- Start by adding the numbers with the smallest place value first.
- Record the sum below the addends.
- To find a missing part, subtract the known part from the whole.
Keywords
Addend - An addend is a number added to another.
Sum - The sum is the the total when numbers are added together.
Column addition - Column addition is a way of adding numbers by writing a number below another.
Common misconception
Pupils may refer to adding numbers in the tens as 3 + 6 rather than 3 tens + 6 tens or 30 + 60
Encourage pupils to refer to the tens numbers as tens. In 34 + 44, we add 4 ones and 4 ones together, and then we add 3 tens and 4 tens together. This will support pupil's understanding as they progress to addition with regrouping.
Teacher tip
Ensure that pupils start by adding numbers with the smallest place value first. Avoid saying 'start with the ones' or 'start on the right' as in upper KS2, there will be column addition with decimal numbers.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the value of the digit 8 in the number 83?
Q2.What 2-digit number could be made using the arrow cards?
Q3.Which expression matches the Base 10 blocks representation?
Q4.Alex is trying to calculate the sum of 36 and 12 using column addition. Which column addition has he set out correctly?
Q5.Alex is trying to calculate forty-five add twenty-three. Which column addition has he set out correctly?
Q6.Which equations match the column addition?
Assessment exit quiz
6 Questions
Q1.What is the sum in this column addition?
Q2.What is the sum in this column addition?
Q3.What ones digit is missing from this column addition?
Q4.What tens digit is missing from this column addition?
Q5.Which two addends would make this column addition correct?
Q6.Which addend would make this column addition correct?
To help you plan your 4 maths lesson on: Review adding 2-digit numbers using column addition without regrouping, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 4 maths lesson on: Review adding 2-digit numbers using column addition without regrouping, 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.