Roman numeral conversion worksheet for practicing reading and writing Roman numerals up to 1000.

Let's solve this step-by-step. The worksheet asks you to:

1. Convert Roman numerals to Arabic numbers (e.g., CC → 200).
2. Convert Arabic numbers to Roman numerals (e.g., 150 → CL).

We’ll use the reference chart at the top:
- 1s: I=1, II=2, III=3, IV=4, V=5, VI=6, VII=7, VIII=8, IX=9, X=10
- 10s: X=10, XX=20, XXX=30, XL=40, L=50, LX=60, LXX=70, LXXX=80, XC=90, C=100
- 100s: C=100, CC=200, CCC=300, CD=400, D=500, DC=600, DCC=700, DCCC=800, CM=900, M=1000

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Part 1: Convert Roman Numerals to Numbers

1) CC = 200
→ C = 100, so CC = 100 + 100 = 200

2) CL = 150
→ C = 100, L = 50 → 100 + 50 = 150

3) CDV = 405
→ CD = 400 (C before D means 500 - 100), V = 5 → 400 + 5 = 405

4) DLX = 560
→ D = 500, L = 50, X = 10 → 500 + 50 + 10 = 560

5) CML = 950
→ CM = 900 (C before M = 1000 - 100), L = 50 → 900 + 50 = 950

6) CXXV = 125
→ C = 100, XX = 20, V = 5 → 100 + 20 + 5 = 125

7) DLVI = 556
→ D = 500, L = 50, V = 5, I = 1 → 500 + 50 + 5 + 1 = 556

8) CXC = 190
→ C = 100, XC = 90 (X before C = 100 - 10) → 100 + 90 = 190

9) DCCX = 710
→ D = 500, CC = 200, X = 10 → 500 + 200 + 10 = 710

10) DLXXII = 572
→ D = 500, L = 50, XX = 20, II = 2 → 500 + 50 + 20 + 2 = 572

11) CLXXIX = 179
→ C = 100, L = 50, XX = 20, IX = 9 → 100 + 50 + 20 + 9 = 179

12) DCCLXX = 770
→ D = 500, CC = 200, L = 50, XX = 20 → 500 + 200 + 50 + 20 = 770

13) CMXXXVII = 937
→ CM = 900, XXX = 30, VII = 7 → 900 + 30 + 7 = 937

14) DCLXXXIV = 684
→ D = 500, C = 100, L = 50, XXX = 30, IV = 4 → 500 + 100 + 50 + 30 + 4 = 684

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Part 2: Convert Numbers to Roman Numerals

Now we go the other way.

1) 150 = CL
→ 100 (C) + 50 (L) = CL

2) 320 = CCCXX
→ 300 (CCC) + 20 (XX) = CCCXX

3) 615 = DCXV
→ 500 (D) + 100 (C) + 10 (X) + 5 (V) = DCXV

4) 94 = XCIV
→ 90 (XC) + 4 (IV) = XCIV

5) 412 = CDXII
→ 400 (CD) + 10 (X) + 2 (II) = CDXII

6) 541 = DXLI
→ 500 (D) + 40 (XL) + 1 (I) = DXLI

7) 225 = CCXXV
→ 200 (CC) + 20 (XX) + 5 (V) = CCXXV

8) 532 = DXXXII
→ 500 (D) + 30 (XXX) + 2 (II) = DXXXII

9) 809 = DCCCIX
→ 800 (DCCC) + 9 (IX) = DCCCIX

10) 674 = DCLXXIV
→ 600 (DC) + 70 (LXX) + 4 (IV) = DCLXXIV

11) 298 = CCXCVIII
→ 200 (CC) + 90 (XC) + 8 (VIII) = CCXCVIII

12) 943 = CMXLIII
→ 900 (CM) + 40 (XL) + 3 (III) = CMXLIII

13) 477 = CDLXXVII
→ 400 (CD) + 70 (LXX) + 7 (VII) = CDLXXVII

14) 839 = DCCCXXXIX
→ 800 (DCCC) + 30 (XXX) + 9 (IX) = DCCCXXXIX

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✔ Final Answers:

#### Part 1: Roman to Arabic
1) CC = 200
2) CL = 150
3) CDV = 405
4) DLX = 560
5) CML = 950
6) CXXV = 125
7) DLVI = 556
8) CXC = 190
9) DCCX = 710
10) DLXXII = 572
11) CLXXIX = 179
12) DCCLXX = 770
13) CMXXXVII = 937
14) DCLXXXIV = 684

#### Part 2: Arabic to Roman
1) 150 = CL
2) 320 = CCCXX
3) 615 = DCXV
4) 94 = XCIV
5) 412 = CDXII
6) 541 = DXLI
7) 225 = CCXXV
8) 532 = DXXXII
9) 809 = DCCCIX
10) 674 = DCLXXIV
11) 298 = CCXCVIII
12) 943 = CMXLIII
13) 477 = CDLXXVII
14) 839 = DCCCXXXIX

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Let me know if you'd like a printable version or explanation of any specific conversion!