A simple challenge that could be used as an assessment tool or simply can be used as review. It is perfect for young students to consolidate their learning of the subtraction skill. This could be given as a written or as an oral challenge. It could also be used as a modified task for an older student.
Subtraction Challenge Worksheet by Melissa Francis is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License