Addition-Roman	Subtraction-Roman	Addition-Numbers	Subtraction-Numbers
100 7 VII	100 9 IX	100 XI 11	100 XIV 14
200 18 XVIII	200 19 XIX	200 XVIII 18	200 XXIX 29
300 77 LXXVII	300 47 XLVII	300 XLIV 44	300 XLVI 46
400 659 DCLIX	400 414 CDXIV	400 LXXXIII 83	400 LXXXIX 89
500 1927 MCMXXVII	500 967 CMLXVII	500 CXXVII 127	500 CXCIV 194

Roman Numerals

How many teams are playing ?
Time given to answer each question ?