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swissgirl
Hey is anyone familiar with 4 digit chopping arithmetic?
Doesn't sound familiar, but I might know what you mean by another name.
Like at what point do I chop?
Like you only have four digits after the decimal
Do I chop at the end or at every point that there is more than 4 digits after the decimal?
Do you mean rounding, truncating, or determining significant figures?
idk what the others r
Sounds like you mean truncating then. Truncate = chop off.
ohhhh lol Ya like when do i chop off?
If you want your answer to only have 4 digits, then count four digits starting from the left, keep those four and get rid of all the rest.
Example. 123.456789 truncated to four digits = 123.4 If you want to truncate to a particular place value, say, the ten-thousandths place, then 123.4567 is truncated at the fourth digit after the decimal point.
yes but my question is as follows like do u chop off like at any point while u r solving or only once u have solved the whole equation?
Like do u contiously chop off?
Ah, only round or truncate at the very end of your calculations! That is very important.
no, only after u finish solving
That is a matter of significant figures then. If you round or truncate in the middle of your calculations you'll get round-off error and all sorts of other nasty business.
ya i figured so i just had to dbl check
Check this example: 12.34567 times 2.98765 = 36.88454098... Truncated at the fourth digit is 36.88 But if you 'chop' first then, 12.34 times 2.987 = 36.85958, which would be chopped to 36.85. That is off from the correct answer by 3/100.