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Son aquellas que combinan operandos
numéricos y operadores matemáticos. El
resultado de la evaluación es siempre un
número (int o float según sea el caso)
Al evaluar una expresión matemática se
sigue el "orden de precedencia" de los
operadores matemáticos:
Primero se resuelven las potencias
Tercero las sumas y restas
Segundo las
multiplicaciones y divisiones
Operadores de cadena (strings)
Los operadores nos permiten realizar cálculos u
acciones sobre valores (que llamaremos
operandos)
Cuando combinamos operandos (valores) y
operadores según reglas de sintaxis del
lenguaje, hablaremos de "expresiones".
Evaluación de expresiones
Al proceso o acción de "calcular el
valor de la expresión" le
denominaremos "evaluación".