Top Definition
The inability to perform basic mathematical calculations.
"Hey, can you help me figure out the tip on this bill? You're the only one here who's not totally mathtarded."
by Jessanie December 07, 2007
The complete inability to perform basic mathematical functions. This can be caused by a long lapse in time between math classes causing brain atrophy, or general retardedness.
I am completely mathtarded in my college algebra class, probably because i haven't taken a math class in three years.
by sockenpuppen December 04, 2008
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