There is a finger trick as well, if you are multiplying 3 x 9, if i put the third finger down and look at my hands i will have two fingers up on one side of my hand and 7 on the other.
N'otu aka ahụ, ọ bụrụ na anyị chọrọ ịmata ka 3 x 9 dị, anyị na-agbada mkpịsị aka nke atọ anyị nwere: 2 n'otu akụkụ na 7 n'akụkụ nke ọzọ: 27.