﻿ Year 3 Add and Subtract Mass Lesson - Classroom Secrets | Classroom Secrets

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# Year 3 Add and Subtract Mass

This Year 3 Add and Subtract Mass lesson covers the prior learning of checking answers, before moving onto the main skill of adding and subtracting mass.

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: (3C3) Estimate the answer to a calculation and use inverse operations to check answers

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### 2 Teaching Support

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#### Lesson Slides

These lesson slides guide pupils through the prior learning of checking answers, before moving onto the main skill of add and subtract mass. 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 Masses Video Tutorial, Vanessa shows pupils how to add and subtract using bar models and part-whole models. She uses key vocabulary including kilogram and grams.

### 1 Prior Learning

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#### Worksheet

This worksheet recaps prior learning of checking answers, before moving onto the main skill of adding and subtracting mass.

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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

This Year 3 Check Answers Game checks pupils' understanding of checking addition and subtraction calculations using the inverse.

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#### Video Tutorial

In this Check Answers Video Tutorial, Aaron shows pupils how to use the inverse operation to check answers. He uses key vocabulary including addition, subtraction, inverse operation, part and whole.

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#### Interactive Animation

This Year 3 Check Answers Interactive Animation consists of 3 questions to consolidate pupils' understanding of using the inverse operation to check if a calculation is correct.

### 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 add and subtract mass.

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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

This Year 3 Add and Subtract Mass Matching Game checks your child's understanding of adding and subtracting different amounts.

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#### Interactive Activity

This Year 3 Add and Subtract Mass Game checks pupils’ understanding of calculating the total mass.

### 4 Extension

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#### Extension

This add and subtract mass extension task includes a challenge activity which can be used to further pupils' understanding of the concepts taught in the add and subtract mass lesson.

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#### Interactive Challenge Activity

This Year 3 Add and Subtract Mass Maths Challenge aims to extend pupils' understanding of measurement.