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Y3 Maths

# Add and Subtract 100s Lesson

This Year 3 Add and Subtract 100s lesson covers the prior learning of counting forwards and backwards in multiples of 100, before moving onto the main skill of adding and subtracting 100s to solve problems.

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: (3C1) Add and subtract numbers mentally, including a three-digit number and hundreds

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### 1 Prior Learning Subscription #### Worksheet

This Year 3 Add and Subtract 100s lesson covers the prior learning of counting forwards and backwards in multiples of 100, before moving onto the main skill of adding and subtracting 100s to solve problems. Subscription #### Interactive Activity

This Year 2 Add and Subtract 10s Game checks pupils’ understanding of adding and subtracting multiples of 10 to and from numbers up to 100. Subscription #### Interactive Activity

This Year 2 Add and Subtract 10s Matching Game checks pupils’ understanding of adding and subtracting multiples of 10 to and from 2-digit numbers. Subscription #### Interactive Activity

This Add and Subtract 10s interactive game aims to support pupils in developing their addition and subtraction fluency.

### 2 Teaching Subscription #### Lesson Slides

These lesson slides guides pupils through the prior learning of counting forwards and backwards in multiples of 100, before moving onto the main skill of add and subtract 100s. There are a number of questions to check pupils' understanding throughout. Subscription #### 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. Subscription #### Video Tutorial

In this Adding and Subtracting 3-Digit Numbers and Hundreds Video Tutorial, Vanessa shows pupils how to solve calculations using Base 10 representations.

### 3 Activities Subscription #### Worksheet

This worksheet includes varied fluency, reasoning and problem solving questions for pupils to practise the main skill of add and subtract 100s. Subscription #### Interactive Activity

This Year 3 Add and Subtract 3-Digit Numbers and Hundreds Flash Cards checks pupils’ understanding of adding and subtracting in their head. Free #### Interactive Activity

This Add and Subtract Multiples of 100 Game checks pupils’ understanding of adding and subtracting multiples of 100 up to 1,000.

### 4 Extension Subscription #### Extension

This add and subtract 100s extension task includes a challenge activity which can be used to further pupils' understanding of the concepts taught in the add and subtract 100s lesson.