# Define Floating-Point Literals (Solution)

**00:00**
As before, I have IDLE’s interactive shell open on the left and a placeholder file for the exercise solution on the right. It already has the instructions defined as a multiline Python string at the top. Once again, we’re going to define a variable, so we start typing the name of the variable, which is `num`

, followed by the assignment operator (`=`

) and the floating-point literal.

**00:24**
The value of that variable should be 175 thousand, but if I write it like this, Python would create an integer instead of a floating-point number. To fix that, I can just append the decimal point and a zero. This is great.

**00:39**
We’ve assigned the expected numeric value to the variable, but they’re specifically asking us to use E notation in the floating-point literal. With E notation, Python takes the number to the left of the `e`

and multiplies it by 10 raised to the power of the number after the `e`

. For example, 0.001 times 10 to the power of 3, or 1000, will move the decimal point 3 places to the right.

**01:08**
Now it’s up to you how many significant digits you want to keep in front of the decimal point and what exponent to use. You could, for example, write `175e3`

to arrive at the same value.

**01:23**
Another option would be to write something like `1.75`

and adjust the number of decimal places accordingly.

**01:31**
That’s E notation in a nutshell. Let’s assign this literal to our variable

**01:39**
and, lastly, print the variable onto the screen.

**01:43**
Remember to always verify if your program works as expected by saving it and running it through Python. Great. It seems that our program is correct, which concludes this exercise.

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