Printable math worksheet for practicing addition of Roman numerals up to 50.

To solve the problem of adding Roman numerals and converting the results back to Roman numerals, we will follow these steps:

1. Convert each Roman numeral to its Arabic numeral equivalent.
2. Add the Arabic numerals.
3. Convert the sum back to a Roman numeral.

Let's go through each problem step by step.

Problem 1: \( \text{XV} + \text{VI} \)

- \( \text{XV} = 15 \)
- \( \text{VI} = 6 \)
- Sum: \( 15 + 6 = 21 \)
- Convert 21 to Roman numeral: \( \text{XXI} \)

Problem 2: \( \text{XII} + \text{XI} \)

- \( \text{XII} = 12 \)
- \( \text{XI} = 11 \)
- Sum: \( 12 + 11 = 23 \)
- Convert 23 to Roman numeral: \( \text{XXIII} \)

Problem 3: \( \text{XV} + \text{XV} \)

- \( \text{XV} = 15 \)
- \( \text{XV} = 15 \)
- Sum: \( 15 + 15 = 30 \)
- Convert 30 to Roman numeral: \( \text{XXX} \)

Problem 4: \( \text{XI} + \text{IX} \)

- \( \text{XI} = 11 \)
- \( \text{IX} = 9 \)
- Sum: \( 11 + 9 = 20 \)
- Convert 20 to Roman numeral: \( \text{XX} \)

Problem 5: \( \text{XXV} + \text{XI} \)

- \( \text{XXV} = 25 \)
- \( \text{XI} = 11 \)
- Sum: \( 25 + 11 = 36 \)
- Convert 36 to Roman numeral: \( \text{XXXVI} \)

Problem 6: \( \text{XX} + \text{XX} \)

- \( \text{XX} = 20 \)
- \( \text{XX} = 20 \)
- Sum: \( 20 + 20 = 40 \)
- Convert 40 to Roman numeral: \( \text{XL} \)

Problem 7: \( \text{XXV} + \text{VIII} \)

- \( \text{XXV} = 25 \)
- \( \text{VIII} = 8 \)
- Sum: \( 25 + 8 = 33 \)
- Convert 33 to Roman numeral: \( \text{XXXIII} \)

Problem 8: \( \text{XIV} + \text{XI} \)

- \( \text{XIV} = 14 \)
- \( \text{XI} = 11 \)
- Sum: \( 14 + 11 = 25 \)
- Convert 25 to Roman numeral: \( \text{XXV} \)

Problem 9: \( \text{XIX} + \text{XII} \)

- \( \text{XIX} = 19 \)
- \( \text{XII} = 12 \)
- Sum: \( 19 + 12 = 31 \)
- Convert 31 to Roman numeral: \( \text{XXXI} \)

Problem 10: \( \text{XXX} + \text{XII} \)

- \( \text{XXX} = 30 \)
- \( \text{XII} = 12 \)
- Sum: \( 30 + 12 = 42 \)
- Convert 42 to Roman numeral: \( \text{XLII} \)

Problem 11: \( \text{XXXI} + \text{XV} \)

- \( \text{XXXI} = 31 \)
- \( \text{XV} = 15 \)
- Sum: \( 31 + 15 = 46 \)
- Convert 46 to Roman numeral: \( \text{XLVI} \)

Problem 12: \( \text{XXV} + \text{IX} \)

- \( \text{XXV} = 25 \)
- \( \text{IX} = 9 \)
- Sum: \( 25 + 9 = 34 \)
- Convert 34 to Roman numeral: \( \text{XXXIV} \)

Problem 13: \( \text{XIV} + \text{IX} \)

- \( \text{XIV} = 14 \)
- \( \text{IX} = 9 \)
- Sum: \( 14 + 9 = 23 \)
- Convert 23 to Roman numeral: \( \text{XXIII} \)

Problem 14: \( \text{XX} + \text{XXIII} \)

- \( \text{XX} = 20 \)
- \( \text{XXIII} = 23 \)
- Sum: \( 20 + 23 = 43 \)
- Convert 43 to Roman numeral: \( \text{XLIII} \)

Problem 15: \( \text{XXII} + \text{XVI} \)

- \( \text{XXII} = 22 \)
- \( \text{XVI} = 16 \)
- Sum: \( 22 + 16 = 38 \)
- Convert 38 to Roman numeral: \( \text{XXXVIII} \)

Problem 16: \( \text{XXXIV} + \text{XV} \)

- \( \text{XXXIV} = 34 \)
- \( \text{XV} = 15 \)
- Sum: \( 34 + 15 = 49 \)
- Convert 49 to Roman numeral: \( \text{XLIX} \)

Final Answer:

\[
\boxed{
\begin{array}{|c|c|c|c|}
\hline
& \text{NUMBER} & & \text{NUMERALS} \\
\hline
1) & \text{XV} + \text{VI} & = & 21 & = & \text{XXI} \\
\hline
2) & \text{XII} + \text{XI} & = & 23 & = & \text{XXIII} \\
\hline
3) & \text{XV} + \text{XV} & = & 30 & = & \text{XXX} \\
\hline
4) & \text{XI} + \text{IX} & = & 20 & = & \text{XX} \\
\hline
5) & \text{XXV} + \text{XI} & = & 36 & = & \text{XXXVI} \\
\hline
6) & \text{XX} + \text{XX} & = & 40 & = & \text{XL} \\
\hline
7) & \text{XXV} + \text{VIII} & = & 33 & = & \text{XXXIII} \\
\hline
8) & \text{XIV} + \text{XI} & = & 25 & = & \text{XXV} \\
\hline
9) & \text{XIX} + \text{XII} & = & 31 & = & \text{XXXI} \\
\hline
10) & \text{XXX} + \text{XII} & = & 42 & = & \text{XLII} \\
\hline
11) & \text{XXXI} + \text{XV} & = & 46 & = & \text{XLVI} \\
\hline
12) & \text{XXV} + \text{IX} & = & 34 & = & \text{XXXIV} \\
\hline
13) & \text{XIV} + \text{IX} & = & 23 & = & \text{XXIII} \\
\hline
14) & \text{XX} + \text{XXIII} & = & 43 & = & \text{XLIII} \\
\hline
15) & \text{XXII} + \text{XVI} & = & 38 & = & \text{XXXVIII} \\
\hline
16) & \text{XXXIV} + \text{XV} & = & 49 & = & \text{XLIX} \\
\hline
\end{array}
}
\]