There were five children in the family and Jim was the third child, having one brother and three sisters. Jim showed a great ability to carry out complicated arithmetical calculations as a child, and whats more he enjoyed doing so.
May mga limang mga bata sa pamilya at Jim ay ang ikatlong anak, pagkakaroon ng isang kapatid na lalaki at tatlong madre. Jim ay nagpakita ng isang mahusay na kakayahan na magsagawa ng kumplikado arithmetical kalkulasyon bilang isang anak, at ano mas masaya siya gawin ito.