There are exactly 42 ways to add whole numbers up to 10. We'll see every one.
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 10. Tap once to start.
2 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 10. Tap once to start.
The narrated video version (coming soon).