997 rounds to
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If 18 091 997 is a series of three separate numbers the roman numerals for them would be 18 = XVIII, 091 = XCI and 997 = CMXCVII.
1003
It is 997/1000 as a decimal equals 0.997
1000* * * * *NO. That is 997 rounded to the nearest ten. A tenth is 1/10 and 997 rounded to the nearest tenth is 997 or, if you need to show the degree of accuracy, 997.0
997/1,000 no further reduction possible as 997 is a prime number