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Characteristics of square roots of numbers

  1. If a square number ends in ‘9’, its square root is a number ending in’3’ or ‘7’.
  2. If a square number ends in ‘1’, its square root is a number ending in’1’ or ‘9’.
  3. If a square number ends in ‘5’, its square root is a number ending in’5’
  4. If a square number ends in ‘4’, its square root is a number ending in’2’ or ‘8’.
  5. If a square number ends in ‘6’, its square root is a number ending in’4’ or ‘6’.
  6. If a square number ends in ‘0’, its square root is a number ending in ‘0’.

Note by Vishal B
4 years ago

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Good observations. Do you know why this is true?

Calvin Lin Staff - 4 years ago

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