This Year 3 Addition and Subtraction Mistake Investigators resource is designed to strengthen children’s reasoning and problem-solving skills by encouraging them to identify and explain mistakes.

For each objective, there are four carefully structured questions: one correct answer and three with errors. Children are challenged to spot the mistakes, select the correct answer, and explain their reasoning.

The resource is ideal for group work, sparking discussion and collaborative learning. It focuses on key addition and subtraction objectives such as adding and subtracting numbers mentally, using column addition and subtraction, estimating answers to calculations and using inverse operations to check answers.

If you’re looking for a resource that builds confidence and deepens reasoning, this is the perfect choice!
This resource is designed to align to White Rose Maths version 3. Classroom Secrets Limited is not affiliated with, endorsed by, or in any way connected to White Rose Education Limited. Our products are original to Classroom Secrets Limited and any reference to White Rose Maths is solely for the purpose of indicating compatibility and does not imply any association with White Rose Education.