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"Please Excuse My Dear Aunt Sally" nghĩa là gì?
25 Jul, 2022
"Please Excuse My Dear Aunt Sally" = xin thứ lỗi cho bà dì Sally thân mến của tôi -> cách giúp học sinh ghi nhớ về thứ tự khi tính toán; các chữ cái ở đầu mỗi từ là viết tắt của Parentheses (trong ngoặc đơn), Exponents (số mũ), Multiplication (phép nhân), Division (phép chia), Addition (phép cộng), và Subtraction (phép trừ).
Ví dụ
What's the best way to improve your memory as you age? Turns out, it depends, a new study (nghiên cứu) suggests. But your fourth-grade math teacher may have been onto something with that phrase to help you remember how to work out a complicated (phức tạp) problem: Please Excuse My Dear Aunt Sally.
As the name implies (nhấn mạnh), this method (phương pháp) relies on a person creating words from the "first letter of each word or line and putting them together." Popular examples of this are "Roy G. Biv" and "Please Excuse My Dear Aunt Sally (PEMDAS)."
Any mathematicians (nhà toán học) out there? Try Nerdle, the game that uses numbers instead of words. The goal? Guess an eight-figure mathematical equation using numbers and symbols. Pro tip: Don’t forget to Please Excuse My Dear Aunt Sally, aka PEMDAS, because the order of operations (phép toán) is key to getting these right.
Do you remember the mnemonic (giúp ghi nhớ) device from math that goes “Please excuse my dear Aunt Sally?” This helps you remember the order of operations in a math equation (parentheses, exponents, multiplication, division, addition, subtraction).
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