SOLUTION: What is the peculiarities of the numbers in the ones place of a square number?

Question 1011118: What is the peculiarities of the numbers in the ones place of a square number?
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!

Any whole number ends in its ones place digit.

The square of a whole number ending in 0 ends in 0
The square of a whole number ending in 1 ends in 1.
The square of a whole number ending in 2 ends in 4.
The square of a whole number ending in 3 ends in 9.
The square of a whole number ending in 4 ends in 6.
The square of a whole number ending in 5 ends in 5.
The square of a whole number ending in 6 ends in 6.
The square of a whole number ending in 7 ends in 9.
The square of a whole number ending in 8 ends in 4.
The square of a whole number ending in 9 ends in 1.

So all square numbers end in 0,1,4,5,6, or 9.
They never end in 2,3,7, or 8.

Edwin

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