We must divide 1989 into its component parts and give each part the matching Roman numeral symbol in order to express 1989 in Roman numerals. Here’s a step-by-step guide to doing it:

Divide the total into thousands, hundreds, tens, and units as step one.

There are four parts to 1989: 1000 (M), 900 (CM), 80 (LXXX), and 9. (IX).

Write the equivalent Roman numerals in step two.

M denotes 1000, CM denotes 900, LXXX denotes 80, and IX denotes 9.

Merge the symbols in step three.

Roman numerals for 1989 may be created by simply combining the symbols for each portion in decreasing order:

MCMLXXXIX = 1989

Hence, 1989 can be represented by the Roman number MCMLXXXIX.

In conclusion, when a procedure is broken down into parts, writing a number in Roman numerals may be simple. You may simply write any number in Roman numerals by determining the number’s component components and allocating the appropriate Roman numeral symbols.