This interactive smartboard lesson provides practice adding three digits. Answers are also provided by a click of the button so activity is self checking. The last slide has interactive dice which can provide unlimited use. Each time you click the dice you will have a different problem with three digits. All slides are linked for easy use. Can be used as review, remediation, or just practice in adding 3 digits. Great for grades 2-5 depending on the level of the students. MUST have SMART Notebook software to download and use this lesson.