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First, we solve the exercise in the parentheses
According to the order of operations, we first multiply and then subtract:
Now we obtain the exercise:
0
Solve the following problem:
\( 187\times(8-5)= \)
Mathematics has a specific order that prevents confusion! Without PEMDAS, the expression could have multiple meanings. Following the rules ensures everyone gets the same answer.
Zero is a perfectly valid answer! Don't assume it's wrong just because it seems too simple. In this problem, the parentheses simplify to zero, making the entire expression equal zero.
Yes, always! Parentheses are the highest priority in PEMDAS. Even if there are multiple operations inside, complete all operations within parentheses before moving to what's outside.
Use PEMDAS within the parentheses too! So in , multiply first, then subtract: .
Students often calculate first, then try to subtract. This completely ignores the parentheses and gives wrong answers. Always respect the parentheses!
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