Please how do I round 56.479 cents to the nearest cents?

Please how do I round 56.479 cents to the nearest cent?

3 Answers
Nov 16, 2017

56

Explanation:

Rounding generally follows the 5/4 rule - round up for a 5 and down for a 4. Per Meave60's comment, ONLY the digit to the right of the rounding space is considered.

My previous answer "rolling up" the digits was incorrect - sorry!

Here are a couple of good explanations:
http://www.math.com/school/subject1/lessons/S1U1L3DP.html

Nov 16, 2017

56 cents

Explanation:

We have 56 cents + 0.479 cents

so the 'cut off' point is the red part

#color(red)(56)color(green)(.479)#

We look at the first digit only that is immediately to the right of the cut off point. In this case it is the four #->color(green)(4)#

This is the rule:
If this digit is less than 5 we do not change the red part.
If the digit is 5 or more we increase the red part by 1.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(brown)("Example")#

Making up a value I choose #color(red)(2)color(green)(.301)#
As the #color(green)(3)# is less than 5 we do not change the red part. So rounded to the nearest whole number we have: #color(red)(2.0)# to 0 decimal places

Making up a another value I choose #color(red)(2)color(green)(.601)#
As the #color(green)(6)# is more than or equal to 5 we increase the red part by 1. So rounded to the nearest whole number we have: #color(red)(3.0)# to 0 decimal places
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(brown)("Back to the question")#

The #color(green)(4)# from #color(red)(56)color(green)(.479)#
is less than 5 so we do not change the red part.

Answer #->56#

Nov 16, 2017

My original answer was wrong! Please read. Comments below for a correct answer.

Explanation:

The nearest cent would be a whole number - so you end up with no numbers after a decimal point.

The basic rule is any number BELOW 5 gets rounded down. So; 5.4 rounded to the nearest whole number would be 5. And number BIGGER than 5 gets rounded up. So; 5.5 rounded to the nearest whole number would be 6.