Year 3 Column Addition and Subtraction: Exchange Explained

Practise Year 3 three-digit column addition and subtraction with worked examples, place-value explanations and structured grids.

WHAT IS INCLUDED
• 32 calculations across eight practice pages.
• Six reasoning tasks.
• Two informal checks with four questions each.
• Worked examples and place-value explanations.
• Full answers and next-step guidance.

HOW TO USE
Begin with the worked examples to explain how exchanging relates to place value. Use the practice pages to move from calculations without exchange to calculations requiring one or two exchanges.

The grid layouts help pupils align hundreds, tens and ones. Use the reasoning tasks to discuss methods and the short checks to identify areas for further teaching or practice.

SUITABILITY
Designed for Year 3 pupils, typically aged 7–8, learning three-digit column addition and subtraction.

Subtraction across zero is not included. Choose pages according to pupils’ taught skills. The checks are informal classroom activities, not standardised assessments.

FORMAT
20 pages in total, including the cover, teacher guidance and answers. Printable A4 PDF in British English. Not editable.

The preview contains selected sample pages. No external paid resources are required.