Watch the video first. Then try these problems docs.google.com/document/d/1sMmer9OOcEyzYDzYRBXpm6FIjwhb6XWedIxHkfqjA-Y/edit?usp=sharing. Last watch my video on how I solved the problems.

Watch the video to practice the counting on strategy with addition. There is the Counting On Song to watch. Also watch the Addition By Counting On.