Question

How do you round $3.2$ to the nearest whole number $?$

Answer 1

Hint: In this question, we are going to round the given value to the nearest whole number.
To round up a number to a specified digit we had to look at the digit one place right of the specified digit. If it is five or more you have to add one to the specified digit. Else, we can leave it unchanged. All digits right to the specified digit become zeros.

Complete step-by-step solution:
In this question, we are going to round off the given number to the nearest whole number.
In order to round up a number$3.2$ to the nearest whole number we have to do the following steps:
Now look at the first digit at the one place right to the specified digit.
Here the first digit at one place is two.
The first digit is less than five so we had to leave the unit digit unchanged, which is the unit digit is three.
Now we had to replace all the digits to the right with zeros.
The result is $3.00$
Hence the roundup of $3.2$ to the nearest whole number is $3.00$
Therefore, the required solution is $3.2 \approx 3.00 = 3$

3.2 rounded off to the nearest whole number is 3.

Note: Rounding off numbers is an important skill to learn for mathematical equations and real life problems. Although rounded numbers are less precise than non-rounded numbers. Rounding off means a number is made simpler by keeping its value intact but closer to the next number. It is done for whole numbers, and for decimals at various places of hundreds, tens, etc. rounding off numbers is done to preserve the significant figures. The number of significant figures in a result is simply the number of figures that are known with some degree of reliability.