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To round a number to a particular digit, look at the digit immediately to the right of your target, in this case, the tenths place. If that digit is 4 or lower, zero it and everything to the right of it out. If that digit is 5 or higher, increase the target digit by one and zero everything to the right of it out. If your target digit is a 9, increasing it will turn it to zero and increase the digit to the left of it by one.
Wiki User
∙ 9y ago
Wiki User
∙ 8y agoIf the fractional part is less than 0.5 you just delete it.If the fractional part is greater than 0.5 then you increase the integer part of the number and delete everything at or after the decimal point.
If the fractional part is exactly 0.5 then, if the last digit of the integer part is even, you leave that as it is and delete everything at or after the decimal point; while if it is odd, you increase it by 1 [so that is it even], and delete everything at or after the decimal point.
This may be at odds with school teaching of rounding 5 up every time but that rule is faulty since it introduces an upward bias. The rule, given above, "round up or down so that the new last digit is even" is consistent with the default rounding mode used in IEEE 754 computing functions and operators.
Wiki User
∙ 13y agoBy taking a number's 2nd decimal place and seeing if it is .45 or higher.
Wiki User
∙ 8y agoThe usual rule for school use is If it's 0.5 or higher, round to the next whole number up.
If it's 0.4999 or lower, round to the whole number part, i.e. round down.
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What is the method to rounding numbers to the nearest tenth using decimals?
if the number is less than 5 round toward the number 1 if the number greater than a 5 round toward the number 9
Using decimals how do you round 5672848 to the nearest hundredth of a million?
the answer is 5.7 million
Using decimals how do you round 7842395 to the nearest hundredth of a million?
That's rounding to the ten thousand place. 7840000
How do you round to the nearest hundreds using number 2811?
2811 rounds down to 2800
How do you round numbers using a graphing calculator?
To 'round numbers' you need to go into mode and select what float you want i.e. if you want to round a number to 2 decimals select 'float 2'
What is 550 rounded to the nearest 100?
600
What number that can round to 80 using digits 1 5 6 and 8?
It is 81.56 to the nearest ten.
What is 31.6 rounded to the nearest hundredth?
31.60
5 20ths as a decimal?
5/20 ~ Your original number 25/100 ~ Decimals are parts of numbers out of the nearest power of ten (100 this time) 0.25 ~ Using decimal notation
How do you round to the nearest million using place value for 27643087?
28,000,000
How do do you write a sentence using nearest?
The number 4 is nearest to the number 5. This is the nearest answer to the question that I can construct.
How many four-place decimals can round to 0.05?
There are 99 of them - using the IEEE standard of rounding half to even
