Unit digit of the square of 29836

Here we will show you two ways of finding the unit digit of the square of 29836. First, we will define what the unit digit of the square of 29836 means. Next, we will find the unit digit of the square of 29836 using the Rule Method, and then we will find the unit digit of the square of 29836 using the Math Method.

The last digit (one digit) of the product you get when you multiply 29836 by itself is the unit digit of the square of 29836.

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 29836 depends on 6, because that is the last digit in 29836. 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 29836 is 6, therefore Rule E applies, and the unit digit of the square of 29836 is 6.

Unit digit of the square of 29836 = 6

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 29836 is 6, so you multiply 6 by itself, and then look at the unit digit to get the answer once again:

6 × 6 = 36
Unit digit of 36 is 6.
Unit digit of the square of 29836 = 6

Of course, instead of using either of the methods above, you can multiply 29836 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 29836. We did that below to double-check that our answer is correct:

29836 × 29836 = 890186896
Unit digit of 890186896 is 6.
Unit digit of the square of 29836 = 6

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