Math

• What way of expressing sets lists down all elements

  Roster notation method
• Collection of objects with same characteristics

  Set
• If set A is a set of counting numbers what do you call 1,2,3,4...

  Elements
• What operation on sets combines all elements found in the sets selected

  Union
• If number 5 is not an element of the set

  Irrational
• Another term for counting numbers

  Natural numbers
• Not a way of describing sets

  Equivalent
• Contains exactly same elements

  Equal
• Used for a null set


  {}
• Describing a set in word

  Verbal description method
• Also called the rule method

  Set builder notation
• Counts how much elements in a set

  Cardinal number
• ( n(A) )

  Cardinal number
• (...)

  Elipsis
• ∅

  Null set
• X/x

  Set builder notation
• Two real numbers can be added in any order

  Commutative property of addition
• If three real numbers are added, it makes no difference which two are added first

  Associative property of addition
• If three real numbers are multipliedIt makes no difference which two are multiplied first

  Associative property of multiplication
• Any number added to 0 will remain the same

  Identity property of addition
• Multiplication distributes over addition/subtraction

  Distributive property of multiplication over addition/subtraction
• Any number multiplied by number 1 will remain unchanged

  Identity property of multiplication
• The sum of a number and its additive inverse is the additive identity element 0
• Multiplicative inverse (reciprocal)


  The number that, when multiplied by the original number, gives the multiplicative identity element 1
• The product of a number and its multiplicative inverse is the multiplicative identity element 1, provided the number is not 0