Use known facts and strategies to accurately and efficiently calculate and check column addition
Lesson details
Learning outcome
I can use known facts and strategies to efficiently calculate and check column addition.
Key learning points
- Consider each calculation to see whether column addition is the most efficient method to use.
- Use strategies to help check calculations.
- Use estimation to give a value close to the correct answer.
Keywords
Efficient - Being efficient means finding a way to solve a problem quickly whilst also maintaining accuracy.
Estimate - Estimation means to find a value that is close enough to the right answer, usually with some thought or calculation involved.
Regroup - The process of unitising and exchanging between place values is known as regrouping.
Common misconception
Pupils may struggle with estimation, especially with thinking of numbers that are quick and easy to calculate with.
Pupils will probably have little or no experience of rounding but they will be able to think about the place value of numbers and give tens or hundreds numbers that are close. Number lines may be helpful for some children.
Teacher tip
In this lesson, pupils will be comparing column addition with informal, mental methods and considering which strategy they should use. They will also be estimating answers and using other checking strategies.
Licence
Lesson video
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Prior knowledge starter 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.What is the missing sum?
Q5.What is the missing tens digit?
Q6.What is the missing addend?
Assessment exit quiz
6 Questions
Q1.What is the missing tens digit in the second addend in the column addition?
Q2.What could the missing digits be in the column addition?
Q3.What is the sum of the two numbers?
Q4.What would be a good estimate for the sum of 298 + 305?
Q5.Which of these calculations would it be more efficient to calculate mentally?
Q6.Which calculations would give an answer between 700 and 800?
To help you plan your 3 maths lesson on: Use known facts and strategies to accurately and efficiently calculate and check column addition, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Use known facts and strategies to accurately and efficiently calculate and check column addition, 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.