Bridge 100 by adding in multiples of 10
I can use number facts to 20 to add multiples of 10 and bridge 100
Bridge 100 by adding in multiples of 10
I can use number facts to 20 to add multiples of 10 and bridge 100
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Lesson details
Key learning points
- The language of unitising helps us to use number facts to 20 to add multiples of 10 crossing the hundreds.
- Crossing the tens boundary helps us to cross the 100s boundary if we think in tens.
- Partitioning an addend helps us to cross the 100 boundary when adding.
Keywords
Addend - An addend means any of the numbers that are added together.
Bridging 100 - Bridging 100 means partitioning one addend to make a number bond to 100 then adding the remaining part.
Common misconception
Lack of fluency with number facts to 20 can hinder progress in applying them to multiples of ten.
Ensure that fluency with number facts to 20 is secure or supported so that pupils can apply them.
To help you plan your year 3 maths lesson on: Bridge 100 by adding in multiples of 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 3 maths lesson on: Bridge 100 by adding in multiples of 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.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 2 maths lessons from the Securing place value to 100 and applying to addition and subtraction 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
Exit quiz
6 Questions
30 + 90
40 + 80
50 + 70
60 + 60
70 + 40