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Y3 Maths

# Subtracting Lengths Lesson

This Year 3 Subtracting Lengths lesson covers the prior learning of subtracting lengths in cm, before moving onto the main skill of subtracting lengths in mm, cm and m.

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 3: (3M9b) Add and subtract lengths (m/ cm/ mm)

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### 1 Prior Learning

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#### Worksheet

This Year 3 Subtracting Lengths lesson covers the prior learning of subtracting lengths in cm, before moving onto the main skill of subtracting lengths in mm, cm and m.

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#### 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.

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#### Video Tutorial

In this Four Operations with Lengths Video Tutorial, Katie demonstrates how to solve word problems involving length. She uses the terminology centimetres, total, different and times.

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#### Interactive Activity

This Year 2 Four Operations with Lengths activity comprises questions to draw on pupils understanding of the four operations and apply their understanding to length.

### 2 Teaching

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#### Lesson Slides

These lesson slides guides pupils through the prior learning of subtracting lengths in cm, before moving onto the main skill of subtracting lengths. There are a number of questions to check pupils' understanding throughout.

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#### 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.

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#### Video Tutorial

In this Add and Subtract Lengths Video Tutorial, Laura shows pupils how to calculate lengths in centimetres and metres. She uses key vocabulary including formal method and total.

### 3 Activities

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#### Worksheet

This worksheet includes varied fluency, reasoning and problem solving questions for pupils to practise the main skill of subtracting lengths.

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#### 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.

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#### Interactive Activity

Pupils can practice adding and subtracting different lengths by playing this Year 3 Add and Subtract Lengths Game.

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#### Interactive Activity

In this Year 3 Add and Subtract Lengths Flash Cards Game, pupils need to add or subtract the lengths together to work out the answers.

### 4 Extension

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#### Extension

This subtracting lengths extension task includes a challenge activity which can be used to further pupils' understanding of the concepts taught in the subtracting lengths lesson.

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#### Interactive Activity

This Year 3 Subtracting Lengths Maths Challenge is designed to check pupils’ understanding of subtracting lengths in different units of measurement within a problem solving context.