The number after a given number is one more than it.

The number before a given number is one less than it.

A number that is before another comes earlier in our count.

A number that is after another comes later in our count.

A line with numbers placed in their correct position.

Show one more and one less than a number using representations and describe this accurately

Maths

In this unit pupils will revisit how numbers are represented cardinally and ordinally. They will partition 1 - 5 in different ways and find a missing part. In the future unit pupils will represent numbers 6 - 10 by partitioning in different ways. They will learn what odd and even numbers are and how they can be partitioned. They will identify a missing part when a whole is partitioned into 2 parts

In prior learning, pupils will have explored the composition of numbers to 10 and be able to subitise up to 5. In this unit pupils will partition 1 to 5 in different ways and find a missing part.

Composition of numbers 0 to 5

Izzy thinks the missing number will be the same for both of these. Is she correct? 

Jacob thinks the missing number will be the same for both of these. Is he correct? 

Jacob has 4 conkers in his pocket. He finds one more. How many conkers does he have now? 

Izzy has 3 pounds in her piggy bank. She is given one more pound. How many does she have now? 

Jacob has 4 conkers in his pocket. He gives one to Izzy. How many conkers does he have left in his pocket? 

Izzy has 5 pounds in her piggy bank. She takes one pound out to spend. How many does she have left? 

What is missing in the count?   1, 2, 3, _, 5 

What number is missing when counting back from 5?   5, 4, _, 2, 1 

The number before my number is one ___ than my number. 

The number after my number is one ___ than my number. 

This lesson will be removed by end of Summer Term 2025.

Show one more and one less than a number using representations and describe this accurately

Lesson outcome

This lesson will be removed by end of Summer Term 2025.