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Massachusetts Comprehensive Assessment System
Grade 5 Mathematics Reference Sheet

PERIMETER (P) FORMULAS 
perimeter equals distance around 
square . . . . . . . . . . .[P equals four multiplied by s]
(s equals length of a side) 
rectangle . . . . . . . . .[P equals two multiplied by l plus two multiplied by w]
(l equals length; w equals width) 
triangle . . . . . . . . . .[P equals a plus b plus c]
(a, b, and c are the lengths of the sides)

AREA (A) FORMULAS 
square . . . . . . . . . . .[A equals s multiplied by s]
(s equals length of a side) 
rectangle . . . . . . . . .[A equals l multiplied by w]
(l equals length; w equals width) 
triangle . . . . . . . . . .[A equals one half multiplied by b multiplied by h]
(b equals length of the base; 
h equals height)

VOLUME (V) FORMULAS 
rectangular prism . . . . .[V equals l multiplied by w multiplied by h] 
(l equals length; w equals width; h equals height)
cube . . . . . . . . . . . . . . . .[V equals s multiplied by s multiplied by s]
(s equals length of an edge)