Python Math: Round up a number to specified digits

Last update on April 24 2025 12:34:55 (UTC/GMT +8 hours)

69. Round Up to Specified Digits

Write a Python function to round up a number to specified digits.

Sample Solution:

Python Code:

import math

def roundup(a, digits=0):
    n = 10**-digits
    return round(math.ceil(a / n) * n, digits)

x = 123.01247
print("Original  Number: ",x)
print(roundup(x, 0))
print(roundup(x, 1))
print(roundup(x, 2))
print(roundup(x, 3))

Sample Output:

Original  Number:  123.01247                                                                                  
124                                                                                                           
123.1                                                                                                         
123.02                                                                                                        
123.013 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python function that rounds a given number up to a specified number of digits using math.ceil() and prints the result.
• Write a Python program to round a list of numbers up to various digit precisions and then output the original and rounded lists side by side.
• Write a Python script to prompt the user for a float and a precision value, then print the number rounded up to that precision.
• Write a Python program to compare rounding up and rounding normally for a set of numbers, and print the differences.

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