Завдання 1001 - 1100 » 1061-1062

1061. Обчисли: 1) (8,23 + (–5,47)) + (–3,84) = (8,23 – 5,47) – (–3,84) = 2,76 + (–3,84) = –(3,84 – 2,76) = –1,08; 2) 4,47 + (–2,98 + 0,47) = 4,47 + (–(2,98 – 0,47)) = 4,47 + (–2,51) = 4,47 – 2,51 = 1,96. 1062. Виконай дії: 1) (4,42 + (–10,8)) + 17,3 = –(10,8 – 4,42) + 17,3 = –6,38 + 17,3 = 17,3 – 6,38 = 10,92; 2) –8,13 + (–3,42 + 4,59) = –8,13 + (4,59 – 3,42) = –8,13 + 1,17 = = –(8,13 – 1,17) = –6,96.