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What is the correct order for performing mathematical operations in simplifying expressions?

Question

I'll give a medal to anyone who helps

What is the correct order for performing mathematical operations in simplifying expressions?

er.mohd.amir · Answer

use "bodmas" rule that is bracket then of then divide then multiply then addition then subtraction .

kat_here2learn · Answer

what does the o stand for? @er.mohd.amir

directrix · Answer

Look at this item about the order of operations.  @kat_here2learn

directrix · Answer

>>use "bodmas" rule

I have not heard of this.

kat_here2learn · Answer

: Brackets (parts of a calculation inside brackets always come first). Orders (numbers involving powers or square roots). Division. Multiplication.

directrix · Answer

Multiplication and Division are on the same tier of the hierarchy.

Addition and Subtraction are on the same tier of the hierarchy.

If you are clear on the  matter, I don't want to muddy the waters. :)

directrix · Answer

I just helped someone with this problem and thought of the standard you posted here.      @kat_here2learn
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 Using the GCF you found in Part B, rewrite 72 + 81 as two factors. One factor is the GCF and the other is the sum of two numbers that do not have a common factor.