2. (0,87+ 1,03+ 1,72+ 1,98+ 2)÷ 5= 1,52
4. (1,08+ 1,99+ 1,76+ 0,99+ 1,32)÷ 5= 1,428
2. (12,4+ 14,8+ 18,9+ 20,1)÷ 4= 16,55
4. (0,89+ 1,23+ 1,64+ 1,79+ 2)÷ 5= 1,51
