arithmetic

Start an arithmetic quiz

$ arithmetic

$ arithmetic -o [+|-|x|/]

$ arithmetic -r [7]

arithmetic [-o +-x/] [-r range]

arithmetic is a simple educational program that quizzes users on basic arithmetic problems. It generates random math problems and tracks the user's accuracy, providing a playful way to practice mental math.
By default, problems use all four basic operations. The range option controls the magnitude of numbers used in problems.

-o operations

Specify which operations to include: + (addition), - (subtraction), x (multiplication), / (division)

Set the range for numbers in problems (0 to range, inclusive)

arithmetic is one of the classic BSD games, originating from the early Unix systems at Bell Labs. It has been included in the bsdgames package for decades as a simple educational utility.

bc(1), dc(1)