Match Each Mathematical Expression With Its Simplified Form.1. { \frac{(7+5)}{2}$}$2. { \frac{(3+1+4+8)}{4}$}$3. { \frac{(2+9+4)}{3}$}$A. 6 B. 5 C. 4

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Introduction

Mathematical expressions are a fundamental part of mathematics, and simplifying them is an essential skill that every student should possess. In this article, we will focus on simplifying three different mathematical expressions and matching each expression with its simplified form. We will use basic arithmetic operations such as addition and division to simplify the expressions.

Expression 1: Simplifying a Fraction

The first expression we will simplify is (7+5)2\frac{(7+5)}{2}. To simplify this expression, we need to follow the order of operations (PEMDAS):

  1. Evaluate the expression inside the parentheses: 7+5=127+5 = 12
  2. Divide the result by 2: 122=6\frac{12}{2} = 6

Therefore, the simplified form of the expression (7+5)2\frac{(7+5)}{2} is 6.

Expression 2: Simplifying a Fraction with Multiple Terms

The second expression we will simplify is (3+1+4+8)4\frac{(3+1+4+8)}{4}. To simplify this expression, we need to follow the order of operations (PEMDAS):

  1. Evaluate the expression inside the parentheses: 3+1+4+8=163+1+4+8 = 16
  2. Divide the result by 4: 164=4\frac{16}{4} = 4

Therefore, the simplified form of the expression (3+1+4+8)4\frac{(3+1+4+8)}{4} is 4.

Expression 3: Simplifying a Fraction with Multiple Terms

The third expression we will simplify is (2+9+4)3\frac{(2+9+4)}{3}. To simplify this expression, we need to follow the order of operations (PEMDAS):

  1. Evaluate the expression inside the parentheses: 2+9+4=152+9+4 = 15
  2. Divide the result by 3: 153=5\frac{15}{3} = 5

Therefore, the simplified form of the expression (2+9+4)3\frac{(2+9+4)}{3} is 5.

Conclusion

In conclusion, simplifying mathematical expressions is an essential skill that every student should possess. By following the order of operations (PEMDAS) and using basic arithmetic operations such as addition and division, we can simplify complex expressions and arrive at their simplified forms. In this article, we have simplified three different mathematical expressions and matched each expression with its simplified form.

Matching the Expressions with their Simplified Forms

Expression Simplified Form
(7+5)2\frac{(7+5)}{2} 6
(3+1+4+8)4\frac{(3+1+4+8)}{4} 4
(2+9+4)3\frac{(2+9+4)}{3} 5

Discussion

  • What are some common mistakes that students make when simplifying mathematical expressions?
  • How can we use technology to simplify complex mathematical expressions?
  • What are some real-world applications of simplifying mathematical expressions?

Answer Key

  • A. 6
  • B. 5
  • C. 4

Additional Resources

  • Khan Academy: Simplifying Expressions
  • Mathway: Simplifying Expressions
  • Wolfram Alpha: Simplifying Expressions
    Simplifying Mathematical Expressions: A Q&A Guide =====================================================

Introduction

Simplifying mathematical expressions is an essential skill that every student should possess. In our previous article, we simplified three different mathematical expressions and matched each expression with its simplified form. In this article, we will provide a Q&A guide to help students understand the concepts and techniques involved in simplifying mathematical expressions.

Q: What is the order of operations (PEMDAS)?

A: The order of operations (PEMDAS) is a set of rules that tells us which operations to perform first when simplifying mathematical expressions. PEMDAS stands for:

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

Q: How do I simplify a fraction?

A: To simplify a fraction, you need to follow these steps:

  1. Evaluate the expression inside the numerator (the top part of the fraction).
  2. Evaluate the expression inside the denominator (the bottom part of the fraction).
  3. Divide the numerator by the denominator.

Q: What is the difference between a simplified expression and an unsimplified expression?

A: A simplified expression is an expression that has been reduced to its simplest form, using the order of operations (PEMDAS) and basic arithmetic operations such as addition and division. An unsimplified expression is an expression that has not been reduced to its simplest form.

Q: How do I know when to use parentheses?

A: You should use parentheses when you need to group certain operations together, or when you need to clarify the order of operations. For example, in the expression 3×(2+4)3 \times (2 + 4), the parentheses are used to group the operations inside the parentheses.

Q: Can I use technology to simplify mathematical expressions?

A: Yes, you can use technology to simplify mathematical expressions. There are many online tools and software programs available that can help you simplify expressions, such as Mathway and Wolfram Alpha.

Q: What are some common mistakes that students make when simplifying mathematical expressions?

A: Some common mistakes that students make when simplifying mathematical expressions include:

  • Not following the order of operations (PEMDAS)
  • Not evaluating expressions inside parentheses first
  • Not simplifying fractions
  • Not using parentheses to group operations together

Q: How can I practice simplifying mathematical expressions?

A: You can practice simplifying mathematical expressions by:

  • Working on math problems and exercises
  • Using online resources and tools, such as Mathway and Wolfram Alpha
  • Asking your teacher or tutor for help
  • Joining a study group or math club

Conclusion

Simplifying mathematical expressions is an essential skill that every student should possess. By following the order of operations (PEMDAS) and using basic arithmetic operations such as addition and division, we can simplify complex expressions and arrive at their simplified forms. In this article, we have provided a Q&A guide to help students understand the concepts and techniques involved in simplifying mathematical expressions.

Additional Resources

  • Khan Academy: Simplifying Expressions
  • Mathway: Simplifying Expressions
  • Wolfram Alpha: Simplifying Expressions
  • IXL: Simplifying Expressions
  • Math Open Reference: Simplifying Expressions