# What does the phrase square of an number mean?

The phrase "square of a number" means the number times itself. For example, the square of 5 is 25. This is the same as saying the number "squared".

### What makes a number a square number?

I don't know if this is what you mean, but to make a normal number a square number, you have to times it by itself ***** I suspect though, that the answer is as follows: A square number is one that is the product of some integer multiplied by itself. This second integer is the square root of the original number. Thus, 9 is a square number since 3*3 = 9

### Can numbers that are not square have square roots?

Yes and no. It depends on your definition of square root. By the actual one, yes. All non-negative numbers have a square root. That square root might be irrational but it has a square root, nonetheless. 10 isn't a square number because there's no integer that can be squared to make ten but 10 definitely has a square root: 3.16227766....... If by square root you mean an integer square root, then no. If a number…