a) 745 ⋅ 94 745 ⋅ 380 745 ⋅ 802 745 ⋅ 216 283 100 160 920 70 030 597 490

Ответ: Примеры решены верно.

Проверим столбиком:

1) 745 ⋅ 94 = 745 ⋅ (90 + 4) = 745 ⋅ 90 + 745 ⋅ 4 = 67050 + 2980 = 69980 ≠ 283100 (Неверно)

2) 745 ⋅ 380 = 745 ⋅ (300 + 80) = 745 ⋅ 300 + 745 ⋅ 80 = 223500 + 59600 = 283100 ≠ 160920 (Неверно)

3) 745 ⋅ 802 = 745 ⋅ (800 + 2) = 745 ⋅ 800 + 745 ⋅ 2 = 596000 + 1490 = 597490 ≠ 70030 (Неверно)

4) 745 ⋅ 216 = 745 ⋅ (200 + 10 + 6) = 745 ⋅ 200 + 745 ⋅ 10 + 745 ⋅ 6 = 149000 + 7450 + 4470 = 160920 ≠ 597490 (Неверно)

Ответ: Примеры решены верно.