Unit digit of the square of 5593

Here we will show you two ways of finding the unit digit of the square of 5593. First, we will define what the unit digit of the square of 5593 means. Next, we will find the unit digit of the square of 5593 using the Rule Method, and then we will find the unit digit of the square of 5593 using the Math Method.

The last digit (one digit) of the product you get when you multiply 5593 by itself is the unit digit of the square of 5593.

Rule Method
The unit digit of any square will never be 2, 3, 7, or 8. It can be only 0, 1, 4, 5, 6, or 9. Furthermore, the unit digit of the square of a number depends on its units digit. In other words, the unit digit of the square of 5593 depends on 3, because that is the last digit in 5593. Here are the rules:

Rule A) If the unit digit of a number is 0, then the unit digit of the square of that number is 0.

Rule B) If the unit digit of a number is 1 or 9, then the unit digit of the square of that number is 1.

Rule C) If the unit digit of a number is 2 or 8, then the unit digit of the square of that number is 4.

Rule D) If the unit digit of a number is 5, then the unit digit of the square of that number is 5.

Rule E) If the unit digit of a number is 4 or 6, then the unit digit of the square of that number is 6.

Rule F) If the unit digit of a number is 3 or 7, then the unit digit of the square of that number is 9.

The unit digit of 5593 is 3, therefore Rule F applies, and the unit digit of the square of 5593 is 9.

Unit digit of the square of 5593 = 9

Math Method
The unit digit of the square of a number depends on its units digit with this method too. Here you multiply the unit digit of the number by itself, and then look at the unit digit of that product. Again, the unit digit of 5593 is 3, so you multiply 3 by itself, and then look at the unit digit to get the answer once again:

3 × 3 = 9
Unit digit of 9 is 9.
Unit digit of the square of 5593 = 9

Of course, instead of using either of the methods above, you can multiply 5593 by itself if you have the time or a calculator, and then identify the unit digit to get the answer to the unit digit of the square of 5593. We did that below to double-check that our answer is correct:

5593 × 5593 = 31281649
Unit digit of 31281649 is 9.
Unit digit of the square of 5593 = 9

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