I thought you might be interested in looking at Add and Subtract Game.
https://forums.soompi.com/en/topic/344014-add-and-subtract-game/?do=findComment&comment=21372888
× Pasted as rich text. Paste as plain text instead
Only 75 emoji are allowed.
× Your link has been automatically embedded. Display as a link instead
× Your previous content has been restored. Clear editor
× You cannot paste images directly. Upload or insert images from URL.
By larus Started September 14, 2018
By Prettysup Started November 9, 2005
By meechuttso Started July 22, 2016
By the7REAL. Started May 13, 2011
By ChoonHee21 Started November 12, 2012