Learn with the Khan Academy Kids app
Kids ages 2-8 (preschool—2nd grade) can read, play, and learn with fun animal friends in our free interactive mobile app, Khan Academy Kids. We have tools for teachers, too!Learn more
Visually adding within 100: Add and subtract within 100Strategies for adding within 100: Add and subtract within 100Visually subtract within 100: Add and subtract within 100
Test your knowledge of the skills in this course. Have a test coming up? The Course challenge can help you understand what you need to review.