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It means that some arithmetic operations are more "important" than others. For example, when you want to figure out:

2 + 3 * 5

you do not just go from left to right adding 2 plus 3, and then multiplying that result by 5.

In algebra and arithmetic, multiplication takes priority over addition, so you do the multiplication first, and then the addition, The order of operations is

2 + 3 *5 (do multiplication first)

2 + 15 (then addition)


You can remember the importance of operations by the phrase "Please Excuse My Dear Aunt Sally". The first letters tell you the order of operations from most important to least important.

P in "Please" stands for Parentheses ( ) - they are most important

E in "Excuse" stands for Exponents like 32

M and D in "My Dear" stands for Multiplication and Division

A and S in "Aunt Sally" stands for Addition and Subtraction - they come last

Another acronym used is BOMDAS.


(power) Of





BODMAS can also be used as Multiplication and Division have equal precedence. In other words they are done left to right, whichever comes first. So in 3*5/2, the multiplication is done first and in 3/5*2 the division is done first. The same applies when addition and subtraction occur in the same calculation, in that they are done left to right.
it means







you have to do it in order

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Q: What does the word order of operations mean?
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What does mean if a calculator follows the order of operations?

It means that the calculator can follow the order of operations and do the order of operations for you but, you need to know how to do them on your own too.

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Tomophobia - fear of surgical operations

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What are synonyms and antonyms for order of operations?

Not all words have synonyms and/or antonyms. What word could possibly have a meaning opposite to 'order of operations'? Possible synonyms could be heuristic or algorithm.

How can order of operations be changed?

If you put in parentheses, you can change the order of operations in many cases, as parentheses come before everything in the order of operations.

What does PEMDAS mean?

Order of operations, namely: Parentheses Exponents Multiplication Division Addition Subtraction

In an order of operations problem if there is a parentheses do the order of operations rules apply in the parentheses?


Why is it necessary to study order of operations and laws of operations before you solve equations?

Because if you did operations in an impermissible order, or violated laws of operations, then your solution to the equation is wrong.

Are all calculators able to compute order of operations?

Can all calcuator solve order of operations

Why do you have to use the order of operations?

We have to use the order of operations so everyone solves a problem the same.

Why do you have to use order of operations for every problem?

Because if you perform the operations in a different order your answer will be wrong.

Abbreviate the word operations?

The abbreviation of operations is 'ops.'.