12,7 ⋅ 0,8 – 9,4 ⋅ 0,8 = 10,16 – 7,52 = 2,64
(42 – 17,36) ⋅ 0,06 = 24,64 ⋅ 0,06 = 1,4784
(0,22 + 4,3) ⋅ (7,225 – 3,6) = 4,52 ⋅ 3,625 = 16,385
(10,84 – 9,6 ⋅ 0,65) ⋅ 7,2 + 25,58 = (10,84 – 6,24) ⋅ 7,2 + 25,58 = 4,6 ⋅ 7,2 + 25,58 = 33,12 + 25,58 = 58,7
16,7 – 4 ⋅ (0,006 + 0,994) ⋅ (4 ⋅ 0,8 – 2) = 16,7 – 4 ⋅ 1 ⋅ (3,2 – 2) = 16,7 – 4 ⋅ 1 ⋅ 1,2 = 16,7 – 4,8 = 11,9
Ответ: 1) 2,64; 2) 1,4784; 3) 16,385; 4) 58,7; 5) 11,9