Tap to add
The 9s trick: The digits of the answer always add up to 9!
+
{{s1.tens}} + {{s1.ones}} = 9
Slide to multiply
Make {{s2.target}} groups of 8 octopuses.
🐙
123456789
Perfect!
Drag to cauldron
Match the product to the correct equation.
{{bottle.ans}}
Type to unlock
Solve the final fact to open the chest!
{{ s4.input || '--' }}
{{ s4.isComplete ? '🔓' : '🔒' }}
🏆
Mastered!
You know your 7, 8, and 9 facts.