Завдання 1101 - 1200 » 1104

Обчисли: 1) – 18 + (–7) + 14 + 25 + 13 + (–10) = –18 + (–7) + (–10) + (14 + 25 + 13) = –35 + 52 = 17; 2) 37 + (–18) + 23 + 1 + (–42) + (–5) = 38 + (–42) = –4; 3) 15,7 + 16,3 + (–8,13) + (–18,5) = 32 + (–26,63) = 5,37; 4) 14,5 + (–18,3) + (–17,1) + (–8,9) = 14,5 + (–44,3) = –29,8.