What kind of Number is it! (Rational/Irrational #'s)

By Lonnie Myers
Last updated over 7 years ago
5 Questions

Use your calculator to find the square root of the following numbers.  Decide whether the decimals are rational (having decimals that terminate or repeat) or irrational. 

  • 6.25
  • 100
  • 7
  • 2
  • Rational
  • Irrational

Without doing any calculations, label the numbers below as rational or irrational numbers









Now use your calculator and write the equivalent decimal for each of the numbers in the list above.  Were your predictions correct?

What do you notice about the decimal forms of rational numbers compared to irrational numbers?