Please Excuse My Dear Aunt Sally

Please Excuse My Dear Aunt Sally

A mnemonic device used in mathematics for remembering the order of operations when calculating an equation: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. If you find yourself getting confused about whether to square the value before you divide while solving for X and Y, just remember the phrase "Please Excuse My Dear Aunt Sally." A: "I know the answer! X equals 75!" B: "You forgot about Please Excuse My Dear Aunt Sally—you didn't multiply the two values before subtracting them from the third."
See also: aunt, dear, excuse, please, sally
Farlex Dictionary of Idioms.
See also:
  • PEMDAS
  • BEDMAS
  • BODMAS
  • change sides, change signs
  • My Very Eager Mother Just Served Us Nine Pizzas
  • My Very Eager Mother Just Served Us Nine Pumpkins
  • My Very Easy Method Just Speeds Up Naming Planets
  • My Very Educated Mother Just Served Us Nine Pizzas
  • My Very Educated Mother Just Served Us Nine Pumpkins
  • Pumpkin