1915
Forty years ago from 2015 would be the year 1975. To determine this, you simply subtract 40 from 2015, resulting in 1975.
1985 = 2015 - 30
As the question was asked on the 11th of May 2015, the answer is 2001.
Remembering that there was no year zero, it would be 3564 years.
95 = 2015 - 1920
This is 2015, so the year 1916 was 99 years ago. You'd need to specify a date to see if it was actually 100 years or only 99 years ago.
1985 = 2015 - 30
The year 100 was the last year of the 1st century AD. As of the 4th of March 2015 that is just over 1914 years and 2 months ago.
It is 2015 now - so 49 years ago it was 1966.
This depends on what today is. See the related link, "100 years ago today". To calculate late the date, subtract 100 from the current year, and use the same date. For example, of today were July 5, 2015, then 100 years ago would be July 5, 1915, since 2015 - 100 = 1915.
8000 - 2015 = 5985 B.C.
2015 − 1947 = 68 years ago.
The idea is to subtract, in this case, 2015 - 20.
As the question was asked on the 11th of May 2015, the answer is 2001.
It's 2015 now (as of this answer), so it was 2010 five years ago.
1875 + 25 = 1900 1900 + 100 = 2000 2000 + 15 = 2015 25 + 100 + 15 = 140
100