Ответ:

  1. \(45 \cdot 238 = 10\,710\).
  2. \(307 \cdot 29 = 307 \cdot (30 - 1) = 9210 - 307 = 8903\).
  3. \(1058 \cdot 33 = 1058 \cdot (30 + 3) = 31\,740 + 3174 = 34\,914\).
  4. \(402 \cdot 87 = 402 \cdot (80 + 7) = 32\,160 + 2814 = 34\,974\).
  5. \(19\,264 : 32 = 602\).
  6. \(20\,876 : 307 = 68\).
  7. \(5452 : 58 = 94\).
  8. \(58\,630 : 902 = 65\).

Ответ: 1) 10 710; 2) 8903; 3) 34 914; 4) 34 974; 5) 602; 6) 68; 7) 94; 8) 65.