Завдання 1201 - 1300 » 1248

Обчисліть: 1) 31/2 + (–8,05) – (–4,42) = 3,5 – 8,05 + 4,42 = 7,92 – 8,05 = –0,13; 2) –6,02 + 23,6 – (–131/50) = –6,02 + 23,6 + 1,62 = 19,2; 4) 4 – 4/15 – (–11/3) + (–1/6) = 4 – 4/15 + 4/3 – 1/6 = 4 – 8/30 + 40/30 – 5/30 = 4 + 27/30 = 49/10 = 4,9; 5) 0,25 – |–3,6| + (–5) – |– 1/4| = 0,25 – 3,6 – 5 – 0,25 = –8,6.