Subtracting numbers that bridge through 10
Lesson details
Learning outcome
I can subtract through 10 using bridging.
Key learning points
- When the subtrahend is bigger than the ones value of the minuend, we will have to bridge through 10
- Composition of numbers to 10 allows us to partition numbers when we are subtracting.
- Composition of numbers to 10 allows us to bridge through ten when subtracting.
Keywords
Minuend - The minuend is the number being subtracted from.
Subtrahend - A subtrahend is a number subtracted from another.
Bridge - Bridge means subtracting to make 10 and then subtracting whatever is left.
Partition - Partition means splitting a number into smaller parts.
Common misconception
Pupils may incorrectly partition the subtrahend.
Partition the subtrahend to count back to ten or a tens number. Use number pairs that total ten to help subtract whatever is left.
Teacher tip
It would be helpful if pupils have tens frames, counters and/or number lines to help them represent the problems. Pupils may also benefit from having the number cards 1-9.
Licence
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the missing subtrahend?
Q2.Which equations have a difference of 10?
Q3.There are 18 slices of pizza. Alex eats some slices. There are 10 slices left. How many slices did Alex eat?
Q4.Match each equation with the correct difference.
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Q5.Calculate the missing subtrahend.
Q6.What could the missing subtrahends be? Tick all the possible answers.
Assessment exit quiz
6 Questions
Q1.What is 12 − 4?
Q2. Izzy is trying to find the answer to 13 − 6. What is the best way of partitioning 6 to bridge 10?
Q3.Alex has 11 cherries. He eats 7 of them. How many are left?
Q4.Izzy uses a number line to find the answer to an equation. What has Izzy subtracted altogether?
Q5.Match the equations to the correct differences.
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Q6.What is the missing subtrahend?
To help you plan your 3 maths lesson on: Subtracting numbers that bridge through 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 3 maths lesson on: Subtracting numbers that bridge 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.