please excuse my dear Aunt Sally

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Ultimately from PEMDAS.


please excuse my dear Aunt Sally

  1. (mathematics) A common mnemonic that is used to help people remember the order of operations, in the PEMDAS order.

Usage notes[edit]

This mnemonic leads many to the notion that multiplication is precedent to division, and addition to subtraction; however, these are within the pairs equal in precedence and resolved from left to right.