Show one more and one less than a number using representations and describe this accurately
I can recognise that the number before a given number is one less and the number after a given number is one more.
Show one more and one less than a number using representations and describe this accurately
I can recognise that the number before a given number is one less and the number after a given number is one more.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Movement is magnitude. As you move forwards through the counting sequence the quantity increases by one.
- Movement is magnitude. As you move backwards through the counting sequence the quantity decreases by one.
- Use a number line to model the counting sequence and include zero.
Keywords
One more - The number after a given number is one more than it.
One less - The number before a given number is one less than it.
Before - A number that is before another comes earlier in our count.
After - A number that is after another comes later in our count.
Number line - A line with numbers placed in their correct position.
Common misconception
Children may confuse one more and one less, particularly when finding missing numbers.
Use the stem sentence __ is one more / less than __ because it comes after / before it in the count.
Licence
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
