What's on this worksheet
Two three-digit numbers in columns, with exchanges in some, all or none of the columns. Each sheet comes with an answer key on a separate page.
Teaching tips
- Check each answer with the inverse: subtract one number from the total.
- Place value counters on a hundreds, tens and ones chart show exactly what an exchange is.
How to use this worksheet maker
Press New worksheet for a fresh set of problems, then Print. To save a PDF instead, choose "Save as PDF" in the print window. Every sheet has a short code in the bottom corner. Copy the link to a sheet and you can print exactly the same problems again later, which is handy for retakes and for sharing with other teachers.
National Curriculum: Year 3: add and subtract numbers with up to three digits, using formal written methods of columnar addition and subtraction.