Вправи 1001 - 1100 » 1073

Обчисліть найзручнішим способом: 1) –32,3 ∙ 710/13 + 23/13 ∙ (–32,3) = –32,3 ∙ (710/13 + 23/13) = –32,3 ∙ 10 = –323; 2) 1,6 ∙ (–5,3) – 2,4 ∙ (–5,3) –44/5 ∙ 5,3 = (–5,3) ∙ (1,6 – 2,4 + 4,8) = = (–5,3) ∙ 4 = –21,2; 3) –5,6 ∙ 42/3 + 647/48 ∙ 5,6 + 25/16 ∙ (–5,6) = (–5,6) ∙ (42/3 – 647/48 + 25/16) = = (–5,6) ∙ (432/48 – 647/48 + 215/48) = (–5,6) ∙ 0 = 0.