Part 1: Basic Conversion

1. Convert the following Roman numerals to Arabic numbers:
   a) IX = 9
   b) XIV = 14
   c) XXVII = 27
   d) XL = 40
   e) XC = 90
   f) CXXV = 125

2. Convert the following Arabic numbers to Roman numerals:
   a) 4 = IV
   b) 19 = XIX
   c) 36 = XXXVI
   d) 49 = XLIX
   e) 88 = LXXXVIII
   f) 123 = CXXIII

Part 2: Fill in the Blanks

1. I, II, III, IV, V

2. X, XX, XXX, XL, L

3. XL, L, LX, LXX

4. C, CX, CXX, CXXX, CXL

Part 3: Word Problems

1. What is the result if you add the Roman numerals, XII and XV?
   XII + XV = XXVII

2. Subtract IX from XX. What is the result?
   XX - IX = XI

Part 4: Match the Columns

Column AColumn Ba) VI6b) XL40c) L50d) IX9e) XC90

Part 5: Fun Puzzle

Message: IX III VI VII III I IX
Decoded Message: I C F G C A I
Using the position in the alphabet, the decoded message is: I CAN WIN

End of Answer Key

Questions

Answer Key: Roman Numerals