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According to rules of the order of operations , we must first place the multiplication exercise inside of parentheses:
Let's now proceed to solve the said expression:
We should obtain the following exercise:
14.4
\( 100+5-100+5 \)
Mathematics has specific rules called PEMDAS that tell us the correct order. Going left to right works for some problems, but not when multiplication and addition are mixed together!
Any number multiplied by 1 equals itself! So . This is called the multiplicative identity property.
Use the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right). Many students remember it as "Please Excuse My Dear Aunt Sally."
Parentheses always come first! If you saw , you'd solve inside the parentheses first to get .
Yes! Showing each step helps you avoid mistakes and proves you understand order of operations. Write: , then .
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