-232
To find the year that was 245 years ago, you subtract 245 from the current year, 2023. This calculation gives you 2023 - 245 = 1778. Therefore, it was the year 1778, 245 years ago.
119
1971
26
12
83
-3990
You would use a - to subtract a number on a spreadsheet
4002
To figure this out, simply subtract 2010 by 1943.2010-1943=67
1600 bc is -1600. 2010-(-1600) = 2010 + 1600, so the difference is 3610 years
49 years old. You simply subtract 1961 from 2010.