Page 22 - Maths Class 05

Rules

« The symbols I, X, C and M can be repeated at most three times.

« A smaller symbol, placed to the right of bigger one indicates addition whereas if
it is placed to the left, indicates subtraction.

« Symbols V, L and D are neither repeated nor written to the left of any symbols.

Example : Write the Roman Numerals for the following numbers :
a. 891 b. 786 c. 456 d. 989 e. 1341

f. 4429 g. 17946 h. 90000 i. 62495 j. 49972

Solution : a. 891 = 800 + 90 + 1 = DCCC + XC + I = DCCCXCI

b. 786 = 700 + 80 + 6 = DCC + LXXX + VI = DCCLXXXVI

c. 456 = 400 + 50 + 6 = CD + L + VI = CDLVI

d. 989 = 900 + 80 + 9 = CM + LXXX + IX = CMLXXXIX

e. 1341 = 1000 + 300 + 40 + 1 = M + CCC + XL + I = MCCCXLI

f. 4429 = 4000 + 400 + 20 +9 = IV + CD + XX + IX = IVCDXXIX

g. 17946 = 17,000 + 900 + 40 + 6

= XVII + CM + XL + VI

= XVIICMXLVI
h. 90000 = 90,000 = XC

i. 62495 = 62,000 + 400 + 90 + 5

= LXII + CD + XC + V

= LXIICDXCV

j. 49972 = 49,000 + 900 + 70 + 2
= XLIX + CM + LXX + II

= XLIXCMLXXII

Practice - 1.5
Practice - 1.5
Practice - 1.5
Practice - 1.5
1. Write the Roman Numerals for the following.

a. 846 b. 842 c. 834

d. 298 e. 946 f. 296

g. 333 h. 156 i. 1122

j. 959 k. 2746 l. 4579

Mathematics-5 22