please excuse my dear Aunt Sally
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English[edit]
Etymology[edit]
Ultimately from PEMDAS.
Phrase[edit]
please excuse my dear Aunt Sally
- (mathematics) A mnemonic 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.