S. K. Gupta Anubhuti Gangal Class 5 Math Seventeenth Chapter Roman Numerals Exercise 56
EXERCISE 56
Complete:
(1) CDL = 500 – 100 + 50 = 450
(2) CCXXI = 200 + 20 + 1 = 221
(3) XIV = 10 + 4 = 14
(4) CXL = 100 + 40 = 140
Write the following Roman numerals in the Hindu-Arabic system:
Ans: (5) (a) 5 – 1 = 4
(b) 10 – 1 = 9
(c) 10 + 1 + 1 = 12
(d) 5 + 1 = 6
(e) 5 + 1 + 1 = 7
(6) (a) 5 + 1 + 1 + 1 = 8
(b) 10 + 5 + 1 = 16
(c) 10 + 5 + 1 + 1 = 17
(d) 10 + 5 + 1 + 1 + 1 = 18
(e) 10 + (10 – 1) = 19
(7) (a) 10 + 10 + 10 = 30
(b) 50 – 10 = 40
(c) 10 + 10 + 5 = 25
(d) (50 – 10) + 1 = 41
(e) 100 + 100 + 10 + 1 + 1 = 212
(8) (a) 10 + 10 + (5 – 1) = 24
(b) 50 + 1 + 1 = 52
(c) (50 – 10) + (5 – 1) = 44
(d) 50 + 5 = 55
(e) 50 + 10 + 10 = 70
(9) (a) (100 – 10) + 5 = 95
(b) 50 + (10 – 1) = 59
(c) 50 + 10 +10 + 10 +1 =81
(d) 50 + 10 + 5 = 65
(e) 50 + 10 + (10 – 1) = 69
(10) (a) 100 + 100 + 50 +1 = 251
(b) (100 – 10) + 1 = 91
(c) (500 – 100) + (10 – 1) = 409
(d) 100 + 10 + 5= 115
(e) (500 – 100) + 10 + 5 = 415
(11) (a) 100 + 100 + 50 + 10 + 10 + (5 – 1) = 274
(b) (500 – 100) + 10 + 10 + 10 + 1 + 1 = 432
(c) (500 – 100) + 50 + 10 + 10 + 5 + 1 + 1 + 1 = 478
Give the corresponding Roman numerals:
(12) (a) 3 = III
(b) 6 = VI
(c) 15 = XV
(d) 17 = XVII
(e) 19 = XIX
(13) (a) 22 = XXII
(b) 24 = XXIV
(c) 28 = XXVIII
(d) 32 = XXXII
(e) 35 = XXXV
(14) (a) 51 = LI
(b) 105 = CV
(c) 210 = CCX
(d) 307 = CCCVII
(e) 416 = CDXVI
(15) Fill in the blanks:
If the roman numerals M, D, C, L, V, X, I, appear in descending order we add their values.
(16) Which of the following numerals are meaningless?
(a) IX IV
(b) CCCI
(c) ICC
(d) CIC
(e) CMXIV
(f) MC
(g) DM
(h) MXXXVII
(i) LCXVI
Ans: (a), (c), (d), (g), (i) are meaningless numerals.
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