Mathemagic by Trickmaster Magic (M12)

Four rods each have 16 numbers on them (4 on each side). The spectator rolls them out and arranges the rods in any order they choose.

You hand them a calculator (not supplied) and have them add the four rows of multidigit numbers up. You reveal the sum before they even get started with the calcualtor.

This may be repeated as often as you wish, the answers are different each time. Requires no advanced math to perform.You always know the answer, instantly!

(Colors may vary)