My Dear Aunt Sally Math Rule

16 8 3 2 4.

My dear aunt sally math rule. 3 9 x 8 6 2. Aunt sally no longer needs to be involved in math. Below illustrates an example where there are two possible answers. We don t want that to happen.

Furthermore in my experience as a mathematician expressions like 8 2 4 look absurdly. For example in mathematics and most computer languages multiplication is granted a higher precedence than addition and it has been this way since the. Yet i was working with several. After you have done p and e just go from left to right doing any m or d as you find them.

24 6 x 2 x 2 4. Now realize following aunt sally is purely a matter of convention. Please excuse my dear aunt sally pemdas forever. A ddition and s ubtraction left to right divide and multiply rank equally and go left to right.

Using these rules aunt sally would interpret 1 2 3 1 6 7 3 4 2 3 2 5 3 2 2 3 1 6 2 3 1 6 8 1 15. However what your grade school teacher failed to say is that there are no universally accepted rules for the order in which arithmetic operations should be performed. Move your mouse over the problem to see if your answer is correct. P parentheses e is exponents m and d are multiplication and division and a and s are addition and subtraction.

16 4 2 2 x 3 2 9. This phrase stands for and helps one remember the order of parentheses exponents multiplication and division and addition and subtraction. Otherwise it is possible to get multiple or different answers. The pemdas rule an acronym for please excuse my dear aunt sally is a set of rules that prioritize the order of calculations that is which operation to perform first.

Add and subtract rank equally and go left to right so do it this way. A common technique for remembering the order of operations is the abbreviation or more properly the acronym pemdas which is turned into the mnemonic phrase please excuse my dear aunt sally. The saying please excuse my dear aunt sally is often used to help folks remember the proper order. The first letter of each word here stands for a math operation.

Let s remove her from the equation. Most of us who grew up in the united states remember the order of operations as please excuse my dear aunt sally or pemdas. In that sense pemdas is arbitrary.