Adding, Subtracting, Multiplying and Dividing with Floating-Point Numbers

If you are calculating a numerical value and only using the data type floating-point, your answer will also be a floating-point number. If you are using both integers and floating-points numbers, the result will be of the data type floating-point.

>>> 5 + 5.0
10.0
>>> 5 - 5.0
0.0
>>> 5 * 5.0
25.0
>>> 5 / 5.0
1.0

This is true for integers, except in the case of using the / operator for division, this will always return a floating point number so that your answer will not lose precision, otherwise an operation such as 5/2 would evaluate to 2.

>>> 5 + 5
10
>>> 5 - 5
0
>>> 5 * 5
25
>>> 5 / 5
1.0
>>> 5 / 2
2.5

Notice how the example of 5/5 evaluates to 1.0 and 5/2 evaluates to 2.5, both floating-point numbers.