Add three addends by finding pairs that total 10
Lesson details
Learning outcome
I can recognise number pairs that total 10 and use them to find the sum of three numbers.
Key learning points
- Rearranging the addends identifies the pairs that total 10.
- Place value means we can add a single digit to 10.
- Representations help us to see the pair that makes 10 and the extra ones number.
Keywords
Addend - A number added to another.
Commutative - Addition is commutative. This means the order of the addends can be changed without changing the calculation or sum.
Equation - An equation is used to show that one number or calculation is equal to another.
Sum - The sum is the total when numbers are added together.
Common misconception
Pupils believe a pair to 10 only exists if the addends are next to one another in an equation.
Addition is commutative. Model the use of tens frames to show efficient addition of calculations containing number pairs to 10.
Teacher tip
Tens frames help pupils understand and use number pairs that total ten. These can also be useful for representing problems with missing addends.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which calculation has the same sum as 3 + 4 + 5?
Q2.What is the sum of the numbers in the bar model?
Q3.What addend is missing from the bar model?
Q4.Which number makes this equation correct?
Q5.What number is added to 7 to make 10?
Q6.Which pairs of dice show a total of ten dots?
Assessment exit quiz
6 Questions
Q1.What equation do the tens frames represent?
Q2.Which calculations include number pairs that total 10?
Q3.Match the equation to the correct sum.
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14
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Q4.What is the sum of the numbers in the bar model?
Q5.Find the missing addend in the equation.
Q6.What addend is missing from this bar model?
To help you plan your 3 maths lesson on: Add three addends by finding pairs that total 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Add three addends by finding pairs that total 10, 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 strategies for adding and subtracting across 10 unit, dive into the full primary maths curriculum, or learn more about lesson planning.