a) 52,102 + 20,205 + 18,310 + 36,278 =
= 72,307 + 18,310 + 36,278 =
= 90,617 + 36,278 =
= 126,895
b) 10,134 + 92,001 + 71,12 + 34,508 + 43 =
= 102,135 + 71,12 + 34,508 + 43 =
= 173,255 + 34,508 + 43 =
= 207,763 + 43 =
= 250,763
c) 6,4 + 8,2 + 0,369 + 2,072 + 11,0322 + 7,281 =
= 14,6 + 0,369 + 2,072 + 11,0322 + 7,281 =
= 14,969 + 2,072 + 11,0322 + 7,281 =
= 17,041 + 11,0322 + 7,281 =
= 28,0732 + 7,281 =
= 35,3542.