Номер 337.
Найдите значение выражения, дважды воспользовавшись распределительным свойством:
а) 22 ⋅ 26 - 11 ⋅ 26;
б) 32 ⋅ 26 - 11 ⋅ 32;
в) 43 ⋅ 16 + 43 ⋅ 13;
г) 48 ⋅ 11 + 48 ⋅ 4.
Образец. 43 ⋅ 25 - 43 ⋅ 13 = 43 ⋅ (25 - 13) = 43 ⋅ 12 = 43 ⋅ (10 + 2) = 430 + 86 = 516.
а) 22 ⋅ 26 − 11 ⋅ 26 = 26 ⋅ (22 – 11) = 26 ⋅ 11 = 26 ⋅ (10 + 1) = 260 + 26 = 286
б) 32 ⋅ 26 − 11 ⋅ 32 = 32 ⋅ (26 – 11) = 32 ⋅ 15 = 32 ⋅ (10 + 5) = 320 + 160 = 480
в) 43 ⋅ 16 + 43 ⋅ 13 = 43 ⋅ (16 + 13) = 43 ⋅ 29 = 43 ⋅ (20 ⋅ 9) = 860 + 387 = 1247
г) 48 ⋅ 11 + 48 ⋅ 4 = 48 ⋅ (11 + 4) = 48 ⋅ 15 = 48 ⋅ (10 + 5) = 480 + 240 = 720
