Respuesta :

The metric unit of length that is equal to one thousandth of a meter is a millimeter. 1 meter = 1000 millimeter

hope this helps
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Your question states: A metric unit of length that is equal to one thousandth of a meter is.......

The answer is a millimeter

 A metric unit of length that is equal to one thousandth of a meter is a millimeter.


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~ Zoe