What is rounding and why is it needed?
Posted: Tue Feb 18, 2025 4:51 am
Learning to round numbers
Analysis
January 23, 2025
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Rounding Numbers in Python: Choosing the Best Way
Content
1.
What is rounding and why is it needed?
2.
Function round()
3.
Function int()
4.
Rounding functions from the math module
5.
The quantize() method from the decimal module
6.
Task for independent completion
7.
Let's sum it up
Alexey
Alexey
Python and JavaFX developer, author of the Skillfactory blog
Let's talk about rounding and why it might be needed. Let's find out what methods of rounding numbers are available in the Python programming language.
9 months
Python Developer
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vsrat_8-3-300x272
Python Developer
Rounding off numbers can be defined as replacing one number with another that is approximately equal to the first with a certain accuracy. Examples of rounding off:
14.9 ≈ 15
0.128 ≈ 0.13
49987 ≈ 50000
Rounding may be necessary when high accuracy is not required in sri lanka telegram data calculations or when an approximate value is sufficient for acceptable accuracy of the calculation result. Rounding can also significantly simplify calculations.
After all, it is much more convenient to represent the same number π as a modest 3.14, and not as, say, 3.14159265358979323846, if the accuracy of the calculations does not require it. Rounded numbers are much easier to read and perceive. When we see numbers with a large number of digits after the decimal point, it looks cumbersome, confusing and incomprehensible. Especially if there are many such numbers.
And, of course, it should be noted that rounding is also useful in terms of saving time. Obviously, it is faster to work with rounded numbers, since they contain fewer digits.
Analysis
January 23, 2025
Share
Rounding Numbers in Python: Choosing the Best Way
Content
1.
What is rounding and why is it needed?
2.
Function round()
3.
Function int()
4.
Rounding functions from the math module
5.
The quantize() method from the decimal module
6.
Task for independent completion
7.
Let's sum it up
Alexey
Alexey
Python and JavaFX developer, author of the Skillfactory blog
Let's talk about rounding and why it might be needed. Let's find out what methods of rounding numbers are available in the Python programming language.
9 months
Python Developer
Learn Python Effectively - With a Program, Practice, and a Tutor
4 030 ₽/month
6 717 ₽/month
Read more
vsrat_8-3-300x272
Python Developer
Rounding off numbers can be defined as replacing one number with another that is approximately equal to the first with a certain accuracy. Examples of rounding off:
14.9 ≈ 15
0.128 ≈ 0.13
49987 ≈ 50000
Rounding may be necessary when high accuracy is not required in sri lanka telegram data calculations or when an approximate value is sufficient for acceptable accuracy of the calculation result. Rounding can also significantly simplify calculations.
After all, it is much more convenient to represent the same number π as a modest 3.14, and not as, say, 3.14159265358979323846, if the accuracy of the calculations does not require it. Rounded numbers are much easier to read and perceive. When we see numbers with a large number of digits after the decimal point, it looks cumbersome, confusing and incomprehensible. Especially if there are many such numbers.
And, of course, it should be noted that rounding is also useful in terms of saving time. Obviously, it is faster to work with rounded numbers, since they contain fewer digits.