USEFUL TABLES 5 



are obtained by prefixing to the names of the principal units 

 the Greek words deca (10), hecto (100), and kilo (1,000); the 

 submultiples, or divisions, are obtained by prefixing the 

 Latin words deci (rV)> centi (T$TT), and milli GmW)- These 

 prefixes form the key to the entire system. The abbrevi- 

 ations of the principal units of these submultiples begin with 

 a small letter, and those of the multiples begin with a capital 

 letter. 



MEASURES OF LENGTH 



10 millimeters (mm.) 



10 centimeters 



10 decimeters 



10 meters 



10 decameters 



10 hectometers. . . 



centimeter cm. 



decimeter dm. 



meter .m. 



decameter Dm. 



hectometer. . . . .Hm. 



kilometer. . . . .Km. 



MEASURES OF SURFACE (NOT LAND) 



100 square millimeters 



(sq. mm.) = 1 square centimeter. . .sq. cm. 



100 square centimeters = 1 square decimeter. . . sq. dm. 



100 square decimeters = 1 square meter sq. m. 



MEASURES OF VOLUME 



1,000 cubic millimeters 



(cu. mm.) = 1 cubic centimeter. . . .cu. cm. 



1,000 cubic centimeters =1 cubic decimeter . . . .cu. dm. 



1,000 cubic decimeters =1 cubic meter cu. m. 



MEASURES OF CAPACITY 



10 milliliters (ml.) = 1 centiliter cl. 



10 centiliters = 1 deciliter dl. 



10 deciliters = 1 liter 1. 



10 liters = 1 decaliter Dl. 



10 decaliters = 1 hectoliter HI. 



10 hectoliters = 1 kiloliter Kl. 



The liter is equal to the volume occupied by 1 cu. dm. 



