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'''''Addition and Subtraction 2''''' is an educational title developed by [[:Category:Scott Foresman|Scott Foresman Electronic Publishing]] for the TI-99/4A home computer system. Addition and Subtraction 2 builds upon the concepts found in [[Addition and Subtraction 1]]. It introduces two-digit addition and subtraction whereas, the first volume in the series limits learning to 1 digit arithmetic. It was released during the [[:Category:1981 Software|second quarter of 1981]] and distributed on the [[:Category:Solid State Software Command Module|Solid State Software^TM Command Module]] (aka, cartridge). Addition and Subtraction 2 is also able to take advantage of the add-on [[Solid State Speech Synthesizer|Solid State Speech^TM Synthesizer]] (sold separately) to enhance the educational experience of the program. Upon its release, Addition and Subtraction 2 retailed for $54.95 (USD)for the Scott Foresman version and $39.95 (USD) for the Texas Instruments version.