Mental Math

[Info-Mac]

Download: http://archive.info-mac.org/game/mental-math.hqx

"Mental Math" is a HyperCard shareware program that allows upper
elememtary school children to practice their basic addition,
subtraction, multiplication, and division skills simultaneously on the
screen.
"Mental Math," used by hundreds of elementary school children in
computer labs and classrooms, requires HyperCard Player to run.