1 score = 20 units
A score is 20.
A score is 20, so 4 score is 80.
A score is 20; so 21 X 20 = 420.
I think it's some American thing that said 4 score and whatever years ago. Because it was used in the same sentence as whatever years, the score refers to an amount of years. Score on its own means 20, but it does not have units attached.
As a score is 20 units (usually years), Seven tenths of twenty would be fourteen.
The Modified Aldrete Score is used in post anesthesia care units to determine the oxygen saturation of a patient's blood. A score of 9 or above is required for a patient to be discharged.
A score is 20 years. Four score is 80 years. Thank Abe Lincoln for bringing this wonderful term to us in a way that it keeps "hanging on" through generations that might have forgotten other old units of measure.
A score is twenty. "4 score" is 80.
How many units are in a rate