अभिव्यक्तियों का सरलीकरण और क्रम
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Questions and Answers

PEMDAS का अर्थ क्या है?

  • Parentheses, Exponents, Multiplication and Addition
  • Parentheses, Exponents, Addition and Division
  • Parentheses, Exponents, Multiplication and Division, Addition and Subtraction (correct)
  • Parentheses, Exponents, Division and Multiplication, Addition and Subtraction

Bracket notation का सही उपयोग गणना के लिए आवश्यक नहीं है।

False (B)

25 - 1 / 2 { 5 + 4 - ( 3 + 2 - 1 + 3 )} का अंतिम उत्तर क्या है?

24

गणितीय अभिव्यक्ति में _____ का सही क्रम आवश्यक है।

<p>क्रियाएँ</p> Signup and view all the answers

इन्हें सही क्रियाओं के साथ सही ढंग से मेल करें:

<p>25 = पॉजिटिव पूर्णांक -15 = निगेटिव पूर्णांक 0 = शून्य 20 = पॉजिटिव पूर्णांक</p> Signup and view all the answers

अभिव्यक्ति को हल करने का पहला कदम क्या होता है?

<p>बैकट का ध्यान रखना (A)</p> Signup and view all the answers

सभी गणितीय कार्यों को बायां-से-दांया क्रम में किया जाता है।

<p>True (A)</p> Signup and view all the answers

गणितीय अभिव्यक्तियों को उचित तरीके से हल करना क्यों आवश्यक है?

<p>क्योंकि यह हमें सही उत्तर प्राप्त करने में मदद करता है।</p> Signup and view all the answers

Flashcards

PEMDAS/BODMAS

Rules for evaluating mathematical expressions by following a predefined order (Parentheses/Brackets, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right).

Evaluate an expression

To find the numerical value of a mathematical expression by following the order of operations.

Integer arithmetic

Calculations involving positive and negative whole numbers (e.g., adding, subtracting, multiplying, dividing integers).

Bracket notation

Using parentheses, curly braces, or square brackets to group operations or values in a mathematical expression.

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Innermost brackets

The brackets containing the expression that must be evaluated first within a chain of brackets.

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Order of operations

Sequence in which operations in a mathematical expression are performed. (PEMDAS/BODMAS)

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Expression evaluation

The process of determining the numerical value of a mathematical expression by following the PEMDAS/BODMAS rules, using the proper order of operations in an expression

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Mathematical expression

A combination of numbers, variables, and operators arranged in a manner to perform mathematical calculations.

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Study Notes

Simplifying Expressions using Order of Operations

  • The expression involves various operations: addition, subtraction, division, and brackets. Order of operations (PEMDAS/BODMAS) dictates the sequence in which these operations are performed.
  • PEMDAS (Parentheses/Brackets, Exponents/Orders, Multiplication and Division from left to right, Addition and Subtraction from left to right) is a crucial rule in evaluating expressions.

Evaluating the Expression

  • The expression is 25 - 1 / 2 { 5 + 4 - ( 3 + 2 - 1 + 3 )}
  • First step: Parentheses/Brackets. Focus on the innermost set of brackets first:
    • 3 + 2 - 1 + 3 = 7
  • Second step: Simplify the expression within the next set of brackets:
    • 5 + 4 - 7 = 2
  • Third step: The expression now is 25 - 1 / 2 {2}
  • Fourth step: Brackets again:
    • 25 - 1/4
  • Fifth step: Division:
    • 1/2 = 0.5; Now we have 25 - 0.5 * 2
    • 0.5 * 2 = 1
  • Sixth step: Subtraction:
    • 25 - 1 = 24

Integer Arithmetic

  • The expression uses integers (positive and negative whole numbers).
  • Operations involve integer addition, subtraction, multiplication, and division. Following the order of operations (PEMDAS) is critical for accuracy.

Bracket Notation

  • Brackets in mathematics (parentheses, curly braces, and square brackets) define an operation or grouping of values
  • Correctly using bracket notation is essential for avoiding mistakes.
  • Innermost brackets are evaluated first.

Evaluating Expressions

  • Evaluating an expression means finding its numerical value. This requires following the rules of precedence, particularly the order of operations (PEMDAS/BODMAS).
  • Simplification procedures are necessary steps in reaching the numerical answer.

Order of Operations

  • Order of operations is the sequence in which operations in a mathematical expression are to be performed.
  • PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right) or BODMAS (Brackets, Orders, Division and Multiplication, Addition and Subtraction), provide a universal standard.
  • Incorrect order of operations will lead to an incorrect solution.

Final Answer

  • 25 - 1/2{5 + 4 - (3 + 2 - 1 + 3)} = 24

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इस क्विज़ में अभिव्यक्तियों को सरलीकृत करने में सहायता मिलेगी, जहाँ आप क्रम (PEMDAS/BODMAS) के नियमों का पालन करते हुए विभिन्न गणितीय संचालन में सुधार करेंगे। इसमें जोड़, घटाव, विभाजन और ब्रैकेट्स का उपयोग कर अभिव्यक्तियों का विश्लेषण किया जाएगा।

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