Asked by MAD
I can't understand rounding rules of numbers
Can you simply explain it ?
Can you simply explain it ?
Answers
Answered by
Reiny
You will have to know to how many decimal places you want to round.
best shown with an example
12.3567
suppose you are asked to round to 3 decimal places.
Look at the 4th decimal place. If that is from 0 to 4, the digit in the 3rd decimal stays the same.
If the 4th decimal is from 5-9, increase the 3rd decimal digit by 1
12.3567 ---> 12.357
12.356269 --> 12.356
12.35648 ---> 12.356
Many people make an error with the last one.
They argue that the 8 after the 4 should bump the 4 up to 5, which then would change the 3rd decimal to 7
WRONG, simply look at only the next digit.
another eg.
12.34972 to 3 decimals
----> 12.350 , you should actually show that zero in the 3rd place
you might want to google some webpages with more examples
best shown with an example
12.3567
suppose you are asked to round to 3 decimal places.
Look at the 4th decimal place. If that is from 0 to 4, the digit in the 3rd decimal stays the same.
If the 4th decimal is from 5-9, increase the 3rd decimal digit by 1
12.3567 ---> 12.357
12.356269 --> 12.356
12.35648 ---> 12.356
Many people make an error with the last one.
They argue that the 8 after the 4 should bump the 4 up to 5, which then would change the 3rd decimal to 7
WRONG, simply look at only the next digit.
another eg.
12.34972 to 3 decimals
----> 12.350 , you should actually show that zero in the 3rd place
you might want to google some webpages with more examples
There are no AI answers yet. The ability to request AI answers is coming soon!