Let’s solve the Roman numeral problems step by step.
First, remember the basic Roman numerals:
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Also, remember the subtraction rule: if a smaller numeral comes before a larger one, subtract it (like IV = 4, IX = 9).
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Part 1: Write the correct number next to each Roman numeral.
1) CC → C is 100, so CC = 100 + 100 =
200
2) CL → C=100, L=50 → 100+50 =
150
3) CDV → CD = 400 (because C before D means 500-100), then V=5 → 400+5 =
405
4) DLX → D=500, L=50, X=10 → 500+50+10 =
560
5) CML → CM = 900 (1000-100), L=50 → 900+50 =
950
6) CXXV → C=100, XX=20, V=5 → 100+20+5 =
125
7) DLVI → D=500, L=50, V=5, I=1 → 500+50+5+1 =
556
8) CXC → C=100, XC=90 (100-10) → 100+90 =
190
9) DCCX → D=500, CC=200, X=10 → 500+200+10 =
710
10) DLXXII → D=500, L=50, XX=20, II=2 → 500+50+20+2 =
572
11) CLXXIX → C=100, L=50, XX=20, IX=9 → 100+50+20+9 =
179
12) DCCLXX → D=500, CC=200, L=50, XX=20 → 500+200+50+20 =
770
13) CMXXXVII → CM=900, XXX=30, VII=7 → 900+30+7 =
937
14) DCLXXXIV → D=500, C=100, LXXX=80, IV=4 → 500+100+80+4 =
684
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Part 2: Write the correct Roman numerals next to each number.
We break numbers into hundreds, tens, and ones, then convert each part.
1) 150 → 100 (C) + 50 (L) =
CL
2) 320 → 300 (CCC) + 20 (XX) =
CCCXX
3) 615 → 600 (DC) + 10 (X) + 5 (V) =
DCXV
4) 94 → 90 (XC) + 4 (IV) =
XCIV
5) 412 → 400 (CD) + 10 (X) + 2 (II) =
CDXII
6) 541 → 500 (D) + 40 (XL) + 1 (I) =
DXLI
7) 225 → 200 (CC) + 20 (XX) + 5 (V) =
CCXXV
8) 532 → 500 (D) + 30 (XXX) + 2 (II) =
DXXXII
9) 809 → 800 (DCCC) + 9 (IX) =
DCCCIX
10) 674 → 600 (DC) + 70 (LXX) + 4 (IV) =
DCLXXIV
11) 298 → 200 (CC) + 90 (XC) + 8 (VIII) =
CCXCVIII
12) 943 → 900 (CM) + 40 (XL) + 3 (III) =
CMXLIII
13) 477 → 400 (CD) + 70 (LXX) + 7 (VII) =
CDLXXVII
14) 839 → 800 (DCCC) + 30 (XXX) + 9 (IX) =
DCCCXXXIX
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Final Answer:
1) 200
2) 150
3) 405
4) 560
5) 950
6) 125
7) 556
8) 190
9) 710
10) 572
11) 179
12) 770
13) 937
14) 684
1) CL
2) CCCXX
3) DCXV
4) XCIV
5) CDXII
6) DXLI
7) CCXXV
8) DXXXII
9) DCCCIX
10) DCLXXIV
11) CCXCVIII
12) CMXLIII
13) CDLXXVII
14) DCCCXXXIX
Parent Tip: Review the logic above to help your child master the concept of roman numeral dates worksheet.
