Add & subtract [electronic resource] : [skill & drill, records and analysis the results /
Willink, Nick.
Soft Teach Educational.
Warminster : Soft Teach Educational,
c2001.
System requirements: IBM compatible PC; Windows 95 or later.
Title from program title bar, version from disc label and author details from container.
Accompanied by a Reference sheet and the registration code for full installation.
Computer program.
Mathematics
Available for use on a standalone workstation within the library for single users. Disc will require installation.