Complete the exercise:
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Complete the exercise:
According to the rules of the order of arithmetic operations, we must first place multiplication and division exercises within parentheses:
We then proceed to solve the exercise inside of the parentheses:
We obtain the following exercise:
Lastly we solve the exercise from left to right:
21
\( 8 + 3 \times 2 = \)
Mathematics has a special order called PEMDAS that's different from reading! If we solved left to right, the same expression could have multiple answers, which would make math impossible to use reliably.
You'll get a completely wrong answer! For example, doing first would eventually give you 253 instead of the correct answer 21. Always look for multiplication signs first.
Use the acronym PEMDAS: Parentheses, Exponents, Multiplication/Division (left to right), Addition/Subtraction (left to right). Some people remember it as "Please Excuse My Dear Aunt Sally."
Not required, but it can help! Writing makes it clearer which operations to do first, especially when you're learning.
That's normal! In this problem, when you calculate , you get a positive result, but negative intermediate results are fine too. Just keep following the order carefully.
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