Y1

Year 1 One More One Less (to 100)

This Year 1 One More One Less lesson covers the prior learning of finding one more and one less than numbers to 50, before moving onto the main skill of finding one more and one less than numbers to 100.

The lesson starts with a prior learning worksheet to check pupils’ understanding. If they need more practice, you can choose other resources for that step. The interactive lesson slides recap the prior learning before moving on to the main skill. Children can then practise further by completing the activities and can extend their learning by completing an engaging extension task.

National Curriculum Objective

Mathematics Year 1: (1N1a) Count to and across 100, forwards and backwards, beginning with 0 or 1, or from any given number

Mathematics Year 1: (1N2b) Given a number, identify one more and one less

Mathematics Year 1: (1N4) Identify and represent numbers using objects and pictorial representations including the number line, and use the language of: equal to, more than, less than (fewer), most, least

Mathematics Year 1: (1N2c) Read and write numbers from 1 to 20 in numerals and words

Get the most from lessons!

Classroom Secrets logo

Resources for teachers

Sign up for £4.83
Classroom Secrets Kids logo

Interactive activities for children

Start free trial

2 Teaching Support

Classroom Secrets logo

Subscription

Lesson Slides

Lesson Slides

These lesson slides guide pupils through the prior learning of finding one more and one less than numbers to 50, before moving onto the main skill of one more one less (to 100). There are a number of questions to check pupils' understanding throughout.

Classroom Secrets Kids logo

Subscription

csk_teaching_title

Lesson Slides

These are the same as the lesson slides on Classroom Secrets. You can assign this as an activity for pupils to access individually in school or remotely from home.

1 Prior Learning

Classroom Secrets logo

Subscription

Worksheet

Worksheet

This worksheet recaps prior learning of finding one more and one less than numbers to 50, before moving onto the main skill of finding one more and one less than numbers to 100.

Classroom Secrets logo

Subscription

Full Step

Full Step

For further practice, visit the full step for a selection of resources and activities to support the prior learning for this lesson.

Classroom Secrets Kids logo

Subscription

csk_pre_learning_title

Interactive Activity

This Year 1 One More and One Less Game checks pupils' understanding of identifying one more or one less than a given number.

3 Activities

Classroom Secrets logo

Subscription

Worksheet

Worksheet

This worksheet includes varied fluency questions and a reasoning or problem solving task for pupils to practise the main skill of one more one less (to 100).

Classroom Secrets logo

Subscription

Practical Activities

Practical Activities

These practical activities include tasks covering a range of provision areas for pupils to practise the main skill of one more one less (to 100).

Classroom Secrets logo

Subscription

Full Step

Full Step

For further practice, visit the full step where you will find a selection of further resources and activities such as a differentiated resource pack, homework/extension worksheet and discussion problem.

Classroom Secrets Kids logo

Subscription

csk_activities_title

Flash Cards Activity

This Year 1 One More One Less Game Flash Cards aims to support and develop recall of one more and one less.

Classroom Secrets Kids logo

Subscription

csk_activities_title

Matching Activity

This interactive game supports pupils in finding one more or one less.

4 Extension

Classroom Secrets logo

Subscription

Extension

Extension

This one more one less (to 100) extension task includes a challenge activity which can be used to further pupils' understanding of the concepts taught in the one more one less (to 100) lesson.

Classroom Secrets Kids logo

Subscription

csk_extensions_title

Challenge Activity

This Year 1 One More and One Less Maths Challenge aims to challenge pupils' understanding of place value.