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According to the order of operations, we first solve the exercise within parentheses:
Now we obtain the exercise:
\( 100-(5+55)= \)
Mathematics has special rules called the order of operations! Unlike reading, we must follow PEMDAS - Parentheses first, then other operations. This ensures everyone gets the same answer.
Without parentheses, would equal 68 because we'd work left to right: 55-8=47, then 47+21=68. The parentheses completely change the answer!
Yes, always! Parentheses are the first priority in PEMDAS, even before multiplication or division. No matter what operations are outside, solve parentheses first.
Think of parentheses as "math containers" - you must empty the container (solve what's inside) before you can use it in the bigger calculation. The P in PEMDAS stands for Parentheses!
If your check doesn't match, you likely skipped the parentheses step. Start over and make sure you calculate first, then subtract from 55.
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