números romanos / regras

Os números romanos foram durante muito tempo a principal forma de representação numérica. Os números eram representados a partir de letras do próprio alfabeto dos romanos.

observação:
I somente aparecerá antes do V e do X. 
X somente aparecerá antes do L e do C 
C somente aparecerá antes do D e do M. 

- letras com: I, X, C e M somente podem ser escritas uma em seguida da outra por três vezes. 

exemplos:
III = 1 + 1 + 1 = 3
XXX= 10 + 10 + 1o  = 30
CCC= 100 + 100 + 100 = 300

Algumas regras:

1)      Quando temos uma letra maior seguida de uma menor somamos os valores: 

exemplos:
VI = 5 + 1 = 6 
XII = 10 + 2 = 12 
LV = 50 + 5 

2)      2) Quando temos uma letra menor seguida de uma maior, subtraímos o valor da maior pelo valor da menor:

exemplos:
IV = 5 – 1 = 4 
IX = 10 – 1 = 9 
XL = 50 – 10 = 40 
XC = 100 – 10 = 90 
CM = 1 000 – 100 = 900 

TABELA DE ALGARISMOS ROMANOS

1 = I	2 = II	3 = III
4 = IV	5 = V	6 = VI
7 = VII	8 = VIII	9 = IX
10 = X	11 = XI	12 = XII
13 = XIII	14 = XIV	15 = XV
16 = XVI	17 = XVII	18 = XVIII
19 = XIX	20 = XX	21 = XXI
22 = XXII	23 = XXIII	24 = XXIV
25 = XXV	26 = XXVI	27 = XXVII
28 = XXVIII	29 = XXIX	30 = XXX
31 = XXXI	32 = XXXII	33 = XXXIII
34 = XXXIV	35 = XXXV	36 = XXXVI
37 = XXXVII	38 = XXXVIII	39 = XXXIX
40 = XL	41 = XLI	42 = XLII
43 = XLIII	44 = XLIV	45 = XLV
46 = XLVI	47 = XLVII	48 = XLVIII
49 = XLIX	50 = L	51 = LI
52 = LII	53 = LIII	54 = LIV
55 = LV	56 = LVI	57 = LVII
58 = LVIII	59 = LIX	60 = LX
61 = LXI	62 = LXII	63 = LXIII
64 = LXIV	65 = LXV	66 = LXVI
67 = LXVII	68 = LXVIII	69 = LXIX
70 = LXX	71 = LXXI	72 = LXXII
73 = LXXIII	74 = LXXIV	75 = LXXV
76 = LXXVI	77 = LXXVII	78 = LXXVIII
79 = LXXIX	80 = LXXX	81 = LXXXI
82 = LXXXII	83 = LXXXIII	84 = LXXXIV
85 = LXXXV	86 = LXXXVI	87 = LXXXVII
88 = LXXXVIII	89 = LXXXIX	90 = XC
91 = XCI	92 = XCII	93 = XCIII
94 = XCIV	95 = XCV	96 = XCVI
97 = XCVII	98 = XCVIII	99 = XCIX
100 = C	101 = CI	102 = CII
103 = CIII	104 = CIV	105 = CV
106 = CVI	107 = CVII	108 = CVIII
109 = CIX	110 = CX	111 = CXI
112 = CXII	113 = CXIII	114 = CXIV
115 = CXV	116 = CXVI	117 = CXVII
118 = CXVIII	119 = CXIX	120 = CXX
121 = CXXI	122 = CXXII	123 = CXXIII
124 = CXXIV	125 = CXXV	126 = CXXVI
127 = CXXVII	128 = CXXVIII	129 = CXXIX
130 = CXXX	131 = CXXXI	132 = CXXXII
133 = CXXXIII	134 = CXXXIV	135 = CXXXV
136 = CXXXVI	137 = CXXXVII	138 = CXXXVIII
139 = CXXXIX	140 = CXL	141 = CXLI
142 = CXLII	143 = CXLIII	144 = CXLIV
145 = CXLV	146 = CXLVI	147 = CXLVII
148 = CXLVIII	149 = CXLIX	150 = CL
151 = CLI	152 = CLII	153 = CLIII
154 = CLIV	155 = CLV	156 = CLVI
157 = CLVII	158 = CLVIII	159 = CLIX
160 = CLX	161 = CLXI	162 = CLXII
163 = CLXIII	164 = CLXIV	165 = CLXV
166 = CLXVI	167 = CLXVII	168 = CLXVIII
169 = CLXIX	170 = CLXX	171 = CLXXI
172 = CLXXII	173 = CLXXIII	174 = CLXXIV
175 = CLXXV	176 = CLXXVI	177 = CLXXVII
178 = CLXXVIII	179 = CLXXIX	180 = CLXXX
181 = CLXXXI	182 = CLXXXII	183 = CLXXXIII
184 = CLXXXIV	185 = CLXXXV	186 = CLXXXVI
187 = CLXXXVII	188 = CLXXXVIII	189 = CLXXXIX
190 = CXC	191 = CXCI	192 = CXCII
193 = CXCIII	194 = CXCIV	195 = CXCV
196 = CXCVI	197 = CXCVII	198 = CXCVIII
199 = CXCIX	200 = CC	201 = CCI
202 = CCII	203 = CCIII	204 = CCIV
205 = CCV	206 = CCVI	207 = CCVII
208 = CCVIII	209 = CCIX	210 = CCX
211 = CCXI	212 = CCXII	213 = CCXIII
214 = CCXIV	215 = CCXV	216 = CCXVI
217 = CCXVII	218 = CCXVIII	219 = CCXIX
220 = CCXX	221 = CCXXI	222 = CCXXII
223 = CCXXIII	224 = CCXXIV	225 = CCXXV
226 = CCXXVI	227 = CCXXVII	228 = CCXXVIII
229 = CCXXIX	230 = CCXXX	231 = CCXXXI
232 = CCXXXII	233 = CCXXXIII	234 = CCXXXIV
235 = CCXXXV	236 = CCXXXVI	237 = CCXXXVII
238 = CCXXXVIII	239 = CCXXXIX	240 = CCXL
241 = CCXLI	242 = CCXLII	243 = CCXLIII
244 = CCXLIV	245 = CCXLV	246 = CCXLVI
247 = CCXLVII	248 = CCXLVIII	249 = CCXLIX
250 = CCL	251 = CCLI	252 = CCLII
253 = CCLIII	254 = CCLIV	255 = CCLV
256 = CCLVI	257 = CCLVII	258 = CCLVIII
259 = CCLIX	260 = CCLX	261 = CCLXI
262 = CCLXII	263 = CCLXIII	264 = CCLXIV
265 = CCLXV	266 = CCLXVI	267 = CCLXVII
268 = CCLXVIII	269 = CCLXIX	270 = CCLXX
271 = CCLXXI	272 = CCLXXII	273 = CCLXXIII
274 = CCLXXIV	275 = CCLXXV	276 = CCLXXVI
277 = CCLXXVII	278 = CCLXXVIII	279 = CCLXXIX
280 = CCLXXX	281 = CCLXXXI	282 = CCLXXXII
283 = CCLXXXIII	284 = CCLXXXIV	285 = CCLXXXV
286 = CCLXXXVI	287 = CCLXXXVII	288 = CCLXXXVIII
289 = CCLXXXIX	290 = CCXC	291 = CCXCI
292 = CCXCII	293 = CCXCIII	294 = CCXCIV
295 = CCXCV	296 = CCXCVI	297 = CCXCVII
298 = CCXCVIII	299 = CCXCIX	300 = CCC
301 = CCCI	302 = CCCII	303 = CCCIII
304 = CCCIV	305 = CCCV	306 = CCCVI
307 = CCCVII	308 = CCCVIII	309 = CCCIX
310 = CCCX	311 = CCCXI	312 = CCCXII
313 = CCCXIII	314 = CCCXIV	315 = CCCXV
316 = CCCXVI	317 = CCCXVII	318 = CCCXVIII
319 = CCCXIX	320 = CCCXX	321 = CCCXXI
322 = CCCXXII	323 = CCCXXIII	324 = CCCXXIV
325 = CCCXXV	326 = CCCXXVI	327 = CCCXXVII
328 = CCCXXVIII	329 = CCCXXIX	330 = CCCXXX
331 = CCCXXXI	332 = CCCXXXII	333 = CCCXXXIII
334 = CCCXXXIV	335 = CCCXXXV	336 = CCCXXXVI
337 = CCCXXXVII	338 = CCCXXXVIII	339 = CCCXXXIX
340 = CCCXL	341 = CCCXLI	342 = CCCXLII
343 = CCCXLIII	344 = CCCXLIV	345 = CCCXLV
346 = CCCXLVI	347 = CCCXLVII	348 = CCCXLVIII
349 = CCCXLIX	350 = CCCL	351 = CCCLI
352 = CCCLII	353 = CCCLIII	354 = CCCLIV
355 = CCCLV	356 = CCCLVI	357 = CCCLVII
358 = CCCLVIII	359 = CCCLIX	360 = CCCLX
361 = CCCLXI	362 = CCCLXII	363 = CCCLXIII
364 = CCCLXIV	365 = CCCLXV	366 = CCCLXVI
367 = CCCLXVII	368 = CCCLXVIII	369 = CCCLXIX
370 = CCCLXX	371 = CCCLXXI	372 = CCCLXXII
373 = CCCLXXIII	374 = CCCLXXIV	375 = CCCLXXV
376 = CCCLXXVI	377 = CCCLXXVII	378 = CCCLXXVIII
379 = CCCLXXIX	380 = CCCLXXX	381 = CCCLXXXI
382 = CCCLXXXII	383 = CCCLXXXIII	384 = CCCLXXXIV
385 = CCCLXXXV	386 = CCCLXXXVI	387 = CCCLXXXVII
388 = CCCLXXXVIII	389 = CCCLXXXIX	390 = CCCXC
391 = CCCXCI	392 = CCCXCII	393 = CCCXCIII
394 = CCCXCIV	395 = CCCXCV	396 = CCCXCVI
397 = CCCXCVII	398 = CCCXCVIII	399 = CCCXCIX
400 = CD	401 = CDI	402 = CDII
403 = CDIII	404 = CDIV	405 = CDV
406 = CDVI	407 = CDVII	408 = CDVIII
409 = CDIX	410 = CDX	411 = CDXI
412 = CDXII	413 = CDXIII	414 = CDXIV
415 = CDXV	416 = CDXVI	417 = CDXVII
418 = CDXVIII	419 = CDXIX	420 = CDXX
421 = CDXXI	422 = CDXXII	423 = CDXXIII
424 = CDXXIV	425 = CDXXV	426 = CDXXVI
427 = CDXXVII	428 = CDXXVIII	429 = CDXXIX
430 = CDXXX	431 = CDXXXI	432 = CDXXXII
433 = CDXXXIII	434 = CDXXXIV	435 = CDXXXV
436 = CDXXXVI	437 = CDXXXVII	438 = CDXXXVIII
439 = CDXXXIX	440 = CDXL	441 = CDXLI
442 = CDXLII	443 = CDXLIII	444 = CDXLIV
445 = CDXLV	446 = CDXLVI	447 = CDXLVII
448 = CDXLVIII	449 = CDXLIX	450 = CDL
451 = CDLI	452 = CDLII	453 = CDLIII
454 = CDLIV	455 = CDLV	456 = CDLVI
457 = CDLVII	458 = CDLVIII	459 = CDLIX
460 = CDLX	461 = CDLXI	462 = CDLXII
463 = CDLXIII	464 = CDLXIV	465 = CDLXV
466 = CDLXVI	467 = CDLXVII	468 = CDLXVIII
469 = CDLXIX	470 = CDLXX	471 = CDLXXI
472 = CDLXXII	473 = CDLXXIII	474 = CDLXXIV
475 = CDLXXV	476 = CDLXXVI	477 = CDLXXVII
478 = CDLXXVIII	479 = CDLXXIX	480 = CDLXXX
481 = CDLXXXI	482 = CDLXXXII	483 = CDLXXXIII
484 = CDLXXXIV	485 = CDLXXXV	486 = CDLXXXVI
487 = CDLXXXVII	488 = CDLXXXVIII	489 = CDLXXXIX
490 = CDXC	491 = CDXCI	492 = CDXCII
493 = CDXCIII	494 = CDXCIV	495 = CDXCV
496 = CDXCVI	497 = CDXCVII	498 = CDXCVIII
499 = CDXCIX	500 = D	501 = DI
502 = DII	503 = DIII	504 = DIV
505 = DV	506 = DVI	507 = DVII
508 = DVIII	509 = DIX	510 = DX
511 = DXI	512 = DXII	513 = DXIII
514 = DXIV	515 = DXV	516 = DXVI
517 = DXVII	518 = DXVIII	519 = DXIX
520 = DXX	521 = DXXI	522 = DXXII
523 = DXXIII	524 = DXXIV	525 = DXXV
526 = DXXVI	527 = DXXVII	528 = DXXVIII
529 = DXXIX	530 = DXXX	531 = DXXXI
532 = DXXXII	533 = DXXXIII	534 = DXXXIV
535 = DXXXV	536 = DXXXVI	537 = DXXXVII
538 = DXXXVIII	539 = DXXXIX	540 = DXL
541 = DXLI	542 = DXLII	543 = DXLIII
544 = DXLIV	545 = DXLV	546 = DXLVI
547 = DXLVII	548 = DXLVIII	549 = DXLIX
550 = DL	551 = DLI	552 = DLII
553 = DLIII	554 = DLIV	555 = DLV
556 = DLVI	557 = DLVII	558 = DLVIII
559 = DLIX	560 = DLX	561 = DLXI
562 = DLXII	563 = DLXIII	564 = DLXIV
565 = DLXV	566 = DLXVI	567 = DLXVII
568 = DLXVIII	569 = DLXIX	570 = DLXX
571 = DLXXI	572 = DLXXII	573 = DLXXIII
574 = DLXXIV	575 = DLXXV	576 = DLXXVI
577 = DLXXVII	578 = DLXXVIII	579 = DLXXIX
580 = DLXXX	581 = DLXXXI	582 = DLXXXII
583 = DLXXXIII	584 = DLXXXIV	585 = DLXXXV
586 = DLXXXVI	587 = DLXXXVII	588 = DLXXXVIII
589 = DLXXXIX	590 = DXC	591 = DXCI
592 = DXCII	593 = DXCIII	594 = DXCIV
595 = DXCV	596 = DXCVI	597 = DXCVII
598 = DXCVIII	599 = DXCIX	600 = DC
601 = DCI	602 = DCII	603 = DCIII
604 = DCIV	605 = DCV	606 = DCVI
607 = DCVII	608 = DCVIII	609 = DCIX
610 = DCX	611 = DCXI	612 = DCXII
613 = DCXIII	614 = DCXIV	615 = DCXV
616 = DCXVI	617 = DCXVII	618 = DCXVIII
619 = DCXIX	620 = DCXX	621 = DCXXI
622 = DCXXII	623 = DCXXIII	624 = DCXXIV
625 = DCXXV	626 = DCXXVI	627 = DCXXVII
628 = DCXXVIII	629 = DCXXIX	630 = DCXXX
631 = DCXXXI	632 = DCXXXII	633 = DCXXXIII
634 = DCXXXIV	635 = DCXXXV	636 = DCXXXVI
637 = DCXXXVII	638 = DCXXXVIII	639 = DCXXXIX
640 = DCXL	641 = DCXLI	642 = DCXLII
643 = DCXLIII	644 = DCXLIV	645 = DCXLV
646 = DCXLVI	647 = DCXLVII	648 = DCXLVIII
649 = DCXLIX	650 = DCL	651 = DCLI
652 = DCLII	653 = DCLIII	654 = DCLIV
655 = DCLV	656 = DCLVI	657 = DCLVII
658 = DCLVIII	659 = DCLIX	660 = DCLX
661 = DCLXI	662 = DCLXII	663 = DCLXIII
664 = DCLXIV	665 = DCLXV	666 = DCLXVI
667 = DCLXVII	668 = DCLXVIII	669 = DCLXIX
670 = DCLXX	671 = DCLXXI	672 = DCLXXII
673 = DCLXXIII	674 = DCLXXIV	675 = DCLXXV
676 = DCLXXVI	677 = DCLXXVII	678 = DCLXXVIII
679 = DCLXXIX	680 = DCLXXX	681 = DCLXXXI
682 = DCLXXXII	683 = DCLXXXIII	684 = DCLXXXIV
685 = DCLXXXV	686 = DCLXXXVI	687 = DCLXXXVII
688 = DCLXXXVIII	689 = DCLXXXIX	690 = DCXC
691 = DCXCI	692 = DCXCII	693 = DCXCIII
694 = DCXCIV	695 = DCXCV	696 = DCXCVI
697 = DCXCVII	698 = DCXCVIII	699 = DCXCIX
700 = DCC	701 = DCCI	702 = DCCII
703 = DCCIII	704 = DCCIV	705 = DCCV
706 = DCCVI	707 = DCCVII	708 = DCCVIII
709 = DCCIX	710 = DCCX	711 = DCCXI
712 = DCCXII	713 = DCCXIII	714 = DCCXIV
715 = DCCXV	716 = DCCXVI	717 = DCCXVII
718 = DCCXVIII	719 = DCCXIX	720 = DCCXX
721 = DCCXXI	722 = DCCXXII	723 = DCCXXIII
724 = DCCXXIV	725 = DCCXXV	726 = DCCXXVI
727 = DCCXXVII	728 = DCCXXVIII	729 = DCCXXIX
730 = DCCXXX	731 = DCCXXXI	732 = DCCXXXII
733 = DCCXXXIII	734 = DCCXXXIV	735 = DCCXXXV
736 = DCCXXXVI	737 = DCCXXXVII	738 = DCCXXXVIII
739 = DCCXXXIX	740 = DCCXL	741 = DCCXLI
742 = DCCXLII	743 = DCCXLIII	744 = DCCXLIV
745 = DCCXLV	746 = DCCXLVI	747 = DCCXLVII
748 = DCCXLVIII	749 = DCCXLIX	750 = DCCL
751 = DCCLI	752 = DCCLII	753 = DCCLIII
754 = DCCLIV	755 = DCCLV	756 = DCCLVI
757 = DCCLVII	758 = DCCLVIII	759 = DCCLIX
760 = DCCLX	761 = DCCLXI	762 = DCCLXII
763 = DCCLXIII	764 = DCCLXIV	765 = DCCLXV
766 = DCCLXVI	767 = DCCLXVII	768 = DCCLXVIII
769 = DCCLXIX	770 = DCCLXX	771 = DCCLXXI
772 = DCCLXXII	773 = DCCLXXIII	774 = DCCLXXIV
775 = DCCLXXV	776 = DCCLXXVI	777 = DCCLXXVII
778 = DCCLXXVIII	779 = DCCLXXIX	780 = DCCLXXX
781 = DCCLXXXI	782 = DCCLXXXII	783 = DCCLXXXIII
784 = DCCLXXXIV	785 = DCCLXXXV	786 = DCCLXXXVI
787 = DCCLXXXVII	788 = DCCLXXXVIII	789 = DCCLXXXIX
790 = DCCXC	791 = DCCXCI	792 = DCCXCII
793 = DCCXCIII	794 = DCCXCIV	795 = DCCXCV
796 = DCCXCVI	797 = DCCXCVII	798 = DCCXCVIII
799 = DCCXCIX	800 = DCCC	801 = DCCCI
802 = DCCCII	803 = DCCCIII	804 = DCCCIV
805 = DCCCV	806 = DCCCVI	807 = DCCCVII
808 = DCCCVIII	809 = DCCCIX	810 = DCCCX
811 = DCCCXI	812 = DCCCXII	813 = DCCCXIII
814 = DCCCXIV	815 = DCCCXV	816 = DCCCXVI
817 = DCCCXVII	818 = DCCCXVIII	819 = DCCCXIX
820 = DCCCXX	821 = DCCCXXI	822 = DCCCXXII
823 = DCCCXXIII	824 = DCCCXXIV	825 = DCCCXXV
826 = DCCCXXVI	827 = DCCCXXVII	828 = DCCCXXVIII
829 = DCCCXXIX	830 = DCCCXXX	831 = DCCCXXXI
832 = DCCCXXXII	833 = DCCCXXXIII	834 = DCCCXXXIV
835 = DCCCXXXV	836 = DCCCXXXVI	837 = DCCCXXXVII
838 = DCCCXXXVIII	839 = DCCCXXXIX	840 = DCCCXL
841 = DCCCXLI	842 = DCCCXLII	843 = DCCCXLIII
844 = DCCCXLIV	845 = DCCCXLV	846 = DCCCXLVI
847 = DCCCXLVII	848 = DCCCXLVIII	849 = DCCCXLIX
850 = DCCCL	851 = DCCCLI	852 = DCCCLII
853 = DCCCLIII	854 = DCCCLIV	855 = DCCCLV
856 = DCCCLVI	857 = DCCCLVII	858 = DCCCLVIII
859 = DCCCLIX	860 = DCCCLX	861 = DCCCLXI
862 = DCCCLXII	863 = DCCCLXIII	864 = DCCCLXIV
865 = DCCCLXV	866 = DCCCLXVI	867 = DCCCLXVII
868 = DCCCLXVIII	869 = DCCCLXIX	870 = DCCCLXX
871 = DCCCLXXI	872 = DCCCLXXII	873 = DCCCLXXIII
874 = DCCCLXXIV	875 = DCCCLXXV	876 = DCCCLXXVI
877 = DCCCLXXVII	878 = DCCCLXXVIII	879 = DCCCLXXIX
880 = DCCCLXXX	881 = DCCCLXXXI	882 = DCCCLXXXII
883 = DCCCLXXXIII	884 = DCCCLXXXIV	885 = DCCCLXXXV
886 = DCCCLXXXVI	887 = DCCCLXXXVII	888 = DCCCLXXXVIII
889 = DCCCLXXXIX	890 = DCCCXC	891 = DCCCXCI
892 = DCCCXCII	893 = DCCCXCIII	894 = DCCCXCIV
895 = DCCCXCV	896 = DCCCXCVI	897 = DCCCXCVII
898 = DCCCXCVIII	899 = DCCCXCIX	900 = CM