Work Out the Following Expressions

Oct 13, 2025 by wbrum.org 15 views

Introduction

In mathematics, the order of operations is a set of rules that dictate the order in which we perform mathematical operations when there are multiple operations in an expression. This is crucial in ensuring that we get the correct result. In this article, we will work out several expressions using the order of operations and discuss the importance of following these rules.

What is the Order of Operations?

The order of operations is a mnemonic device that helps us remember the order in which we perform mathematical operations. The acronym PEMDAS is commonly used to remember the order of operations:

Parentheses: Evaluate expressions inside parentheses first.
Exponents: Evaluate any exponential expressions next.
Multiplication and Division: Evaluate any multiplication and division operations from left to right.
Addition and Subtraction: Finally, evaluate any addition and subtraction operations from left to right.

Work Out the Following Expressions

a. ${$ (2+6)+14$}$

To work out this expression, we need to follow the order of operations. First, we evaluate the expression inside the parentheses: $2+6=8$ . Then, we add 14 to the result: $8+14=22$ .

b. ${ $2+(6+14)\$}$

In this expression, we need to follow the order of operations. First, we evaluate the expression inside the parentheses: $6+14=20$ . Then, we add 2 to the result: $2+20=22$ .

c. ${$ (77+41)+59$}$

To work out this expression, we need to follow the order of operations. First, we evaluate the expression inside the parentheses: $77+41=118$ . Then, we add 59 to the result: $118+59=177$ .

d. ${ $77+(41+59)\$}$

In this expression, we need to follow the order of operations. First, we evaluate the expression inside the parentheses: $41+59=100$ . Then, we add 77 to the result: $77+100=177$ .

e. ${$ (7959+4939)+5061$}$

To work out this expression, we need to follow the order of operations. First, we evaluate the expression inside the parentheses: $7959+4939=12898$ . Then, we add 5061 to the result: $12898+5061=17959$ .

f. ${ $7959+(4939+5061)\$}$

In this expression, we need to follow the order of operations. First, we evaluate the expression inside the parentheses: $4939+5061=10000$ . Then, we add 7959 to the result: $7959+10000=17959$ .

Conclusion

In this article, we worked out several expressions using the order of operations. We saw that following the order of operations is crucial in ensuring that we get the correct result. By following the PEMDAS acronym, we can evaluate expressions with multiple operations and get the correct result.

Importance of the Order of Operations

The order of operations is important because it helps us to avoid confusion and ensure that we get the correct result. Without the order of operations, mathematical expressions can be ambiguous and difficult to evaluate. By following the order of operations, we can ensure that we get the correct result and avoid errors.

Real-World Applications

The order of operations has many real-world applications. In science, technology, engineering, and mathematics (STEM) fields, the order of operations is used to evaluate complex mathematical expressions. In finance, the order of operations is used to calculate interest rates and investments. In engineering, the order of operations is used to design and build complex systems.

Common Mistakes

One common mistake that people make when working with the order of operations is to forget to evaluate expressions inside parentheses first. This can lead to incorrect results and errors. Another common mistake is to forget to follow the order of operations when there are multiple operations in an expression.

Tips and Tricks

Here are some tips and tricks to help you work with the order of operations:

Always evaluate expressions inside parentheses first.
Follow the PEMDAS acronym to ensure that you evaluate operations in the correct order.
Use parentheses to clarify expressions and avoid confusion.
Practice working with the order of operations to become more comfortable and confident.

Conclusion

Introduction

In our previous article, we discussed the importance of the order of operations in mathematics. We worked out several expressions using the PEMDAS acronym and highlighted the importance of following the order of operations. In this article, we will answer some frequently asked questions about the order of operations.

Q: What is the order of operations?

A: The order of operations is a set of rules that dictate the order in which we perform mathematical operations when there are multiple operations in an expression. The acronym PEMDAS is commonly used to remember the order of operations:

Parentheses: Evaluate expressions inside parentheses first.
Exponents: Evaluate any exponential expressions next.
Multiplication and Division: Evaluate any multiplication and division operations from left to right.
Addition and Subtraction: Finally, evaluate any addition and subtraction operations from left to right.

Q: Why is the order of operations important?

A: The order of operations is important because it helps us to avoid confusion and ensure that we get the correct result. Without the order of operations, mathematical expressions can be ambiguous and difficult to evaluate. By following the order of operations, we can ensure that we get the correct result and avoid errors.

Q: What happens if I forget to evaluate expressions inside parentheses first?

A: If you forget to evaluate expressions inside parentheses first, you may get an incorrect result. For example, consider the expression: $2+6+14$ . If you forget to evaluate the expression inside the parentheses, you may get the result: $2+6+14=22$ . However, if you evaluate the expression inside the parentheses first, you get: $(2+6)+14=8+14=22$ . As you can see, forgetting to evaluate expressions inside parentheses first can lead to incorrect results.

Q: What happens if I forget to follow the order of operations when there are multiple operations in an expression?

A: If you forget to follow the order of operations when there are multiple operations in an expression, you may get an incorrect result. For example, consider the expression: $2+6+14$ . If you forget to follow the order of operations, you may get the result: $2+6+14=22$ . However, if you follow the order of operations, you get: $2+6=8$ , then $8+14=22$ . As you can see, forgetting to follow the order of operations can lead to incorrect results.

Q: How can I remember the order of operations?

A: There are several ways to remember the order of operations. One way is to use the acronym PEMDAS. Another way is to use a mnemonic device such as "Please Excuse My Dear Aunt Sally". You can also practice working with the order of operations to become more comfortable and confident.

Q: What are some common mistakes to avoid when working with the order of operations?

A: Some common mistakes to avoid when working with the order of operations include:

Forgetting to evaluate expressions inside parentheses first.
Forgetting to follow the order of operations when there are multiple operations in an expression.
Not using parentheses to clarify expressions and avoid confusion.
Not practicing working with the order of operations to become more comfortable and confident.

Q: How can I practice working with the order of operations?

A: There are several ways to practice working with the order of operations. One way is to work out expressions using the PEMDAS acronym. Another way is to use online resources such as math games and puzzles. You can also practice working with the order of operations by solving math problems and exercises.

Conclusion

In conclusion, the order of operations is a crucial concept in mathematics that helps us to evaluate expressions with multiple operations. By following the PEMDAS acronym, we can ensure that we get the correct result and avoid errors. With practice and patience, you can become more comfortable and confident working with the order of operations.