Math Basics: Sets and Fractions
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Questions and Answers

What is the notation that describes elements using a rule?

  • Intersection notation
  • Roster notation
  • Set-builder notation (correct)
  • Union notation

What is the term for a collection of unique objects?

  • Element
  • Set (correct)
  • Member
  • Union

What is the term for fractions that have the same value but different numerators and denominators?

  • Ordered fractions
  • Simple fractions
  • Complex fractions
  • Equivalent fractions (correct)

What is the result of combining all elements from two sets?

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

How do you compare fractions with different denominators?

<p>Convert both fractions to have the same denominator (D)</p> Signup and view all the answers

What is the term for the bottom number of a fraction?

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

What is the process of reducing a fraction to its simplest form?

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

Study Notes

Set Theory

  • A set is a collection of unique objects, called elements or members.
  • Sets can be represented using roster notation (listing elements inside curly brackets {}) or set-builder notation (describing elements using a rule).
  • Union of two sets: all elements from both sets combined (e.g., A ∪ B).
  • Intersection of two sets: elements common to both sets (e.g., A ∩ B).
  • Complement of a set: all elements not in the set (e.g., A' or U - A).

Comparing Fractions

  • A fraction represents a part of a whole, consisting of a numerator (top number) and a denominator (bottom number).
  • Equivalent fractions have the same value, but different numerators and denominators (e.g., 1/2 = 2/4).
  • To compare fractions, follow these steps:
    1. Convert both fractions to have the same denominator (find the least common multiple, LCM).
    2. Compare the numerators; the fraction with the larger numerator is larger.
  • Ordering fractions from least to greatest: arrange fractions in ascending order (e.g., 1/4, 1/2, 3/4).
  • Simplifying fractions: divide both numerator and denominator by their greatest common divisor (GCD) to reduce the fraction to its simplest form.

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Test your understanding of set theory and fractions, including union, intersection, and complement of sets, as well as comparing and simplifying fractions.

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