Add three addends efficiently using a range of strategies
I can choose the best strategy to add three small numbers together.
Add three addends efficiently using a range of strategies
I can choose the best strategy to add three small numbers together.
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Lesson details
Key learning points
- Using commutativity allows us to simplify a problem with three addends.
- Using known facts allows us to add three addends efficiently.
- Rearranging the addends to identify the pairs that total 10 allows us to add efficiently.
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 total when numbers are added together.
Common misconception
Children rely on one strategy for adding to find a sum and do not consider the values.
Discuss when it is most efficient to use doubles, near doubles, number pairs to 10. Model efficient approaches.
To help you plan your year 3 maths lesson on: Add three addends efficiently using a range of strategies, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 3 maths lesson on: Add three addends efficiently using a range of strategies, 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.
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Explore more key stage 2 maths lessons from the Review strategies for adding and subtracting across 10 unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
13
12
14
15
Exit quiz
6 Questions
pairs that total 10
near doubles
doubles
11
14
13
12
