Python round up to nearest 10

Python – Round Number to Nearest 10

To round number to nearest 10, use round() function. We can divide the value by 10, round the result to zero precision, and multiply with 10 again. Or you can pass a negative value for precision. The negative denotes that rounding happens to the left of the decimal point.

In this tutorial, we will write Python programs to round a number to its nearest 10 or 100.

For example, if the number is 3652, then its nearest number to 10 is 3650. And the nearest 100 is 3700.

Python round up to nearest 10

Example 1 – Round Number to Nearest 10 using round()

In this example, we will read a number from user, and round the value to its nearest 10 using round() function.

Python Program

number = int(input('Enter a number :'))
rounded = round(number/10)*10
print('Rounded Number :', rounded)

Output

Enter a number :3652
Rounded Number : 3650

Or you can also provide a negative number as the second argument for round() function, to round to those number of digits before decimal point.

Python Program

number = int(input('Enter a number :'))
rounded = round(number, -1)
print('Rounded Number :', rounded)

Output

Enter a number :3652
Rounded Number : 3650

Example 2 – Round Number to Nearest 100 using round()

In this example, we will round the number to its nearest 100 using round() function.

Python Program

number = int(input('Enter a number :'))
rounded = round(number/100)*100
print('Rounded Number :', rounded)

Output

Enter a number :3652
Rounded Number : 3700

Or you can also provide a negative number as the second argument for round() function, to round to those number of digits before decimal point. To round to nearest 100, we need to provide -2 as second argument to round().

Python Program

number = int(input('Enter a number :'))
rounded = round(number, -2)
print('Rounded Number :', rounded)

Output

Enter a number :3652
Rounded Number : 3700

Conclusion

Concluding this Python Tutorial, we learned how to use round() function to round a number to nearest 10 or 100. You can use the same process to find the nearest number to any digit before the decimal point.

If I get the number 46 and I want to round up to the nearest ten. How do can I do this in python?

46 goes to 50.

asked Oct 19, 2014 at 19:47

3

round does take negative ndigits parameter!

>>> round(46,-1)
50

may solve your case.

answered Oct 19, 2014 at 19:51

5

You can use math.ceil() to round up, and then multiply by 10

import math

def roundup(x):
    return int(math.ceil(x / 10.0)) * 10

To use just do

>>roundup(45)
50

answered Oct 19, 2014 at 19:58

Python round up to nearest 10

ParkerParker

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5

Here is one way to do it:

>>> n = 46
>>> (n + 9) // 10 * 10
50

answered Oct 19, 2014 at 19:50

NPENPE

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3

This will round down correctly as well:

>>> n = 46
>>> rem = n % 10
>>> if rem < 5:
...     n = int(n / 10) * 10
... else:
...     n = int((n + 10) / 10) * 10
...
>>> 50

answered Oct 19, 2014 at 20:02

Python round up to nearest 10

2

How do you round up to the nearest 10?

To round to the nearest ten, look at the digit to the right of the tens place. If it's 5 or more, you round up. If it's 4 or less, you round down. 142 has a 2 in the ones place, so you round down to 140.

How do I get Python to round up?

To implement the “rounding up” strategy in Python, we'll use the ceil() function from the math module. The ceil() function gets its name from the term “ceiling,” which is used in mathematics to describe the nearest integer that is greater than or equal to a given number.

Does Python round .5 up or down?

As always, Stack Overflow had the answer: Python rounds . 5 down sometimes because of Banker's Rounding, also known by the much more informative name "Round Half To Even". Python will round . 5 numbers to the nearest even whole.

How does round () work in Python?

The round() function returns a floating point number that is a rounded version of the specified number, with the specified number of decimals. The default number of decimals is 0, meaning that the function will return the nearest integer.