Any decimal number has two parts, one is the whole part and other part is decimal part. Here we will learn about rounding to the nearest tenth. In order to round to nearest tenth, we will look at the digit at hundredth place and accordingly digit at tenth place is effected.
Following rules are followed for rounding of number to the nearest tenth place:
In case digit at hundredth place is less than 5, then digits after tenth place are simply omitted from the number. Thus we observe that in decimal number 63.42, digit at hundredth place is 2, so we observe that this digit is less than 2, so on rounding the number to nearest tenth will be 63.4.
In another situation, if we have a number such that digit at hundredth place is 5 or greater than 5, then digit at the tenth place is added to 0.1 and other digits of number after the decimal place are eliminated. So in case we have number 93.37, here we observe that number has a digit 7 at hundredth place, so we will add 1 to the digit 1 at tenth place and all digits written after tenth place are eliminated. So number 93.37 is rounded off to 93.4.
How long number be, in case we need to convert it to the nearest tenth, we observe that digits written after tenth place will be omitted and we will get the number with only one place after the decimal. So we say that:
87.53 will be written as 87.6, when rounded to nearest tenth place and 98.42 will be written as 98.4.