TEXAS INSTRUMENTS TI 99/4A Subtraction (1982) tested math game cartridge Milliken

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"Subtraction" for the TI 99/4A computer

FORMAT: cartridge
MFR: Texas Instruments
CAT. NO.: PHM 3091
HOUSING: black
LABEL: black
YEAR: 1982

Tested and working. Cartridge only as shown; no other documentation or packaging included.

One of a series of Milliken 'skill drill' cartridges with multiple levels to grow with the proficiency of the student.

Shipping weight 5 ounces.