Respostas

2014-06-16T14:50:31-03:00
81+ 100+2-9+16:25=
199-9:25=
190:25= 7,6
2014-06-16T14:51:27-03:00

81 + (10 + 1)² - (9+16) : 25 =
81 + 11² - 25 : 25 =
81 + 121 - 25 : 25 =
81 + 121 - 1 = 
202 - 1 =
201
1 4 1