Addition by bridging through 10
Lesson details
Learning outcome
I can add two numbers by bridging through ten.
Key learning points
- Partitioning addends supports bridging 10.
- Pairs to 10 can be used to add two or more addends.
Keywords
Bridge - Bridging is a mental strategy which uses addition or subtraction to cross a number boundary.
Partition - Partition means splitting a number into parts.
Common misconception
Pupils partition one of the addends incorrectly to help them bridge ten.
Pupils use number pairs that total ten to help them partition the addend. They consider what they have to add to make ten.
Teacher tip
Tens frames and number lines can represent problems involving bridging ten. Once pupils understand how to bridge ten, they can apply the same strategy to bridging twenty, thirty and other tens numbers.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which of these are number pairs that total 10?
Q2.Match the equation to the sum.
6
5
7
8
Q3.What addend is missing from this equation? 5 + = 10
Q4.What is the missing addend? 10 + = 14
Q5.What addend is missing from the bar model?
Q6.The two missing addends in the equation have the same value. What is that value?
Assessment exit quiz
6 Questions
Q1.Look at the equation. How would you partition 6 to find the sum?
Q2.The number line shows an addition strategy. What number is missing from the number line?
Q3.Alex adds two number cards together to make a total. Match the numbers to the sums.
11
12
13
15
Q4.Izzy added together two numbers to make a sum. She represented her strategy on a number line. What equation did Izzy do?
Q5.What addend is missing from this equation? + 4 = 20
Q6.What addend is missing from the bar model?
To help you plan your 3 maths lesson on: Addition by bridging through 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Addition by bridging through 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.