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You can tell whether a number is a square number by looking at the last digit. A perfect square number ends with either 1, 4, 5, 6, 9 or 00.

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Q: How can I tell whether a number is a square number?
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Related questions

How can you tell whether a square root of a whole number is rational or irrational?

If the whole number is a perfect square, its square root is rational. If not, it's not.


How do you check whether a number is a square number?

if it's square root is an integer, it is a square number.


What is proof of value of square root?

If I tell you that the square root of 2 (for example) is such-and-such, you can verify this by multiplying the number by itself, and seeing whether the result is close to 2.


How can you tell whether za number is prime?

A number is prime if it only has two distinct factors.


Is 2002 a square number?

Try it out. Take the square root on a calculator, and see whether you get a whole number.


Is 177 a square number?

If your question is whether or not 177 has a square root which is an integer, then no.


How can you tell by drawing a factor tree whether or not a number is a square number?

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One quick way to tell whether or not a cell is dividing is to look at the number of chromosomes. If the number is doubled then it is dividing.


How can I tell wet her a number is prime?

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How can you determine whether the square root of a number is a rational number or an irrational number?

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