Type of math used when calculating how much an item will cost you out of pocket after using gift cards and trade in of other items. Usually used to justify a new purchase.
I really wanted to buy these new $200 headphones, but I didn't have the cash. So I used my Morrow Math and figured I could trade in my old pair of headphones and use two gift cards I had and then I would only have to pay $20.
by stubby0011 January 29, 2009
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