Вопрос:

15. Вычислите: 713 × 6; 328 × 7; 674 × 3; 187 × 4; 812 × 5; 625 × 3; 473 × 4; 193 × 6; 162 × 9; 873 × 3; 278 × 7; 145 × 5; 824 × 5; 392 × 4; 295 × 6; 158 × 7.

Ответ:

  1. \(713 \cdot 6 = 4278\);
  2. \(328 \cdot 7 = 2296\);
  3. \(674 \cdot 3 = 2022\);
  4. \(187 \cdot 4 = 748\);
  5. \(812 \cdot 5 = 4060\);
  6. \(625 \cdot 3 = 1875\);
  7. \(473 \cdot 4 = 1892\);
  8. \(193 \cdot 6 = 1158\);
  9. \(162 \cdot 9 = 1458\);
  10. \(873 \cdot 3 = 2619\);
  11. \(278 \cdot 7 = 1946\);
  12. \(145 \cdot 5 = 725\);
  13. \(824 \cdot 5 = 4120\);
  14. \(392 \cdot 4 = 1568\);
  15. \(295 \cdot 6 = 1770\);
  16. \(158 \cdot 7 = 1106\).