Răspuns:
Explicație pas cu pas:
I; V; X; L; C; D; M → cifre romane
1 5 10 50 100, 500, 1 000
45 → XLV ( 40 + 5 = XL + V) 40 = 50 - 10
250 → CCL ( 250 = 2 × 100 + 50 = 2 × C + L )
29 → XXIX ( 20 + 9 = X+X+IX )
55 → LV ( 50+5 = L + V )
133 → CXXXIII ( 100+30+3 = C+XXX+III)
420 → CDXX ( 400+20 = CD + XX)
102 → CII ( 100+2 = C + II )
557 → DLVII ( 500+50+7= D + L + VII)
