Everyone sees the same boardTap the one that is the sum (or product) of two othersA wrong tap locks you out of this roundFirst to the goal wins
Where it comes from, and questions to think about
Greg Tang, an American author of math books for children, invented it. His first Kakooma Puzzles book came out in 2010. Scholastic published an Addition Edition and a Multiplication Edition in 2012.Greg Tang on Kakooma
Questions strong players ask
With 5 numbers, how many different pairs can you add? With 9?
Why does starting from the largest number usually go faster?
If the board has only one odd number, can it be the answer?