One less than is when there is a smaller value by one.

One fewer than is when there is a smaller quantity by one or one has been removed from the set.

When counting, the number before is the one that comes before a given number.

One less with manipulatives and counting

Maths

In this unit pupils will review their knowledge from the EYFS with counting to and from 10. They will compare and order numbers to 10 practically and will consider the role of zero to represent nothing. In the future unit pupils will  consolidate counting to 20 and back. They will secure their understanding of the teens numbers and their understanding of these numbers in an ordinal context

In prior learning, pupils will have learnt to count confidently and have developed a deep understanding of the numbers to 10, the relationships between them and the patterns within those numbers. In this unit pupils will review their knowledge from the EYFS with counting to and from 10, comparing and ordering numbers to 10 and considering the role of zero.

Counting, recognising and comparing numbers 0 - 10

There were 4 cars and one drove away. Which picture shows one fewer than 4 cars?

This is the number 7. Which counters show one less than 7 counters?

This is the number one. Which counters show 1 more than 1?

Which number track has the arrow over the number that is one less than 8?

True or false: The number before 7 is 8 so one less than 7 is 8.

This card shows the number 6. Which picture shows one more than 6 bricks?

Choose the correct number to complete this sentence. One more than 7 is {{ }}

Which number card shows one more than the number of counters in the picture?

The number marked on the track is one more than 7

The number marked on the track is one more than 8

The number marked on the track is one more than 9

Which is the correct sentence to match this picture?

Are these numbers in the correct order for counting backwards?

Which numbers are in the wrong order in the cards?

This lesson will soon be taken down.

One less with manipulatives and counting

Lesson outcome