Notes to the educator: This is a SMART Notebook interactive activity with engaging visuals that stimulates the students' interest in the activity through its hands-on approach. The activity provides students with practice in using the subtracting from Tens technique. Students figure out and write in the missing numbers using the text pen. Students can click, drag to take away e.g., the 6 ones from the 10 ones. This activity is also available as an Easel activity.