what are real numbers

what are real numbers

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  • Does anyone know what a real number is?
  • Hmm I don't know?
  • What is a real number?
  • Our next topic is Rational numbers. A Rational number is a number that can be made by dividing two numbers 
  • Well lets start from the basics like Counting numbers...
  • Exactly!
  • So like 1,2,,3,4,5,6,7,8,9,10?
  • Next we have whole numbers...
  • See Counting numbers are 0-10 and so on but Whole numbers are 1-10 and so on. 
  • No its not its very similar but not the same. 
  • But that is the same exact thing.
  • Ohhh!!
  • Our next topic is Integers. An Integer is a whole number; a number that is not a fraction.
  • Yes! Perfect you guys are really getting this now.
  • So Negative & Positive numbers like -5, 3,-13 and so on ?
  • Yes, but put it like this 1:2.  This is a Rational number or ratio for short.
  • Ohh ok.
  • So 1/2 ?
  • Our last topic is a cousin of the Rational number he is called the Irrational. 
  • An Irrational number is a number that cannot be expressed with any of the other real numbers. Makes sense?
  • Yes perfect so now you know all the sets of Real numbers. 
  • YAY!!!!! 
  • So like pi or 3.14 ? 
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