1.Вычислите наиболее удобным способом: 1) –0,25 ∙ 154 ∙ 4 =







2) 125 ∙ 2,71 ∙ (– 0,8) =



3) 28 ∙ 46 − 36 ∙ 28 − 46 ∙ 39 + 56 ∙ 39 =







4) 55 ∙ 26,4 + 55 ∙ 73,6 − 75 ∙ 61 − 75 ∙ 39 =
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