Characteristics of square roots of numbers

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’

Ex:
1)√529=23
   √729=27
   √1089=33
  √ 1369=37, etc

2)√121= 11
   √361= 19
   √961 =31 
   √81= 9,etc

3)√625=25
√1225=35
√2025=45 & so on

4)√484=22
    √64=8
   √1024=32
   √784=28 & so on

5)√196=14
    √256=16
   √576=24
   √676=26 & so on

6)√100=10
    √400=20
   √10000=100 & so on

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