gem install pdf-writer
Usage: sheets.rb -t 2 -b 1 -o 'x'
-t, --top x Number (x) of digits in top number
-b, --bottom x Number (x) of digits in bottom number
-o, --operator "x" The character representation of the operator
-a, --answers Provide if you want an additional sheet containing the answers
-h, --help Display this screen