Вправи 1001 - 1100 » 1042

Обчисліть найзручнішим способом: 1) –1,25 ∙ (–3,47) ∙ (–8) = (–1,25 ∙ (–8)) ∙ (–3,47) = 10 ∙ (–3,47) = –34,7; 2) –0,001 ∙ (–54,8) ∙ 50 ∙ (–2) = –0,001 ∙ (–54,8) ∙ (–100) = –54,8 ∙ ∙ (–100) ∙ (–0,001) = –54,8 ∙ 0,1 = –5,48; 3) 9/16 ∙ 11/35 ∙ (–32) ∙ (–70) = (9/16 ∙ (–32)) ∙ (11/35 ∙ (–70)) = –18 ∙ (–22) = 396; 4) 4,8 ∙ (–21/6) ∙ (–5/24) ∙ (–6/13) = – (48 • 5)/(10 • 24) ∙ (13 • 6)/(6 • 13) = –1 ∙ 1 = –1.