Halve even 2-digit numbers and multiples of 10
I can halve even 2-digit numbers from 12 to 28 and unitise and apply known facts to halve even multiples of 10
Halve even 2-digit numbers and multiples of 10
I can halve even 2-digit numbers from 12 to 28 and unitise and apply known facts to halve even multiples of 10
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Halving facts to 10 can help to halve 2-digit numbers.
- To halve 2-digit numbers, partition the 2-digit number, halve the tens and the ones, then recombine.
Keywords
Double / Doubling - To become twice as many / to multiply by two.
Half / Halving - One of two equal parts of a whole. To divide into two equal parts.
Partition - The act of splitting an object or value down into smaller parts.
Common misconception
Incorrectly partitioning and halving odd multiples of 10
Ensure children use representations where they are able to see the partitioning of the number into an even multiple of 10 and 10 more. That way, they can clearly see they are still finding half of 30 for example.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
Half of 6 is equal to 3
Half of 10 is equal to 5
Half of 12 is equal to 6
Half of 8 is equal to 4
Half of 40 is equal to 20
Half of 20 is equal to 10
Half of 60 is equal to 30
Half of 80 is equal to 40
