Найди произведение: 314 × 54; 653 × 61; 517 × 27; 369 × 49; 584 × 38; 615 × 21; 932 × 84; 247 × 19; 815 × 63; 426 × 51; 948 × 27; 531 × 15; 462 × 27; 281 × 59; 537 × 43; 193 × 42; 225 × 53; 893 × 37; 392 × 42; 753 × 82.

Умножаем трёхзначное число отдельно на единицы и десятки двузначного числа, затем складываем полученные произведения.

1. 314 × 54 = 314 × 4 + 314 × 50 = 1 256 + 15 700 = 16 956.
2. 653 × 61 = 653 × 1 + 653 × 60 = 653 + 39 180 = 39 833.
3. 517 × 27 = 517 × 7 + 517 × 20 = 3 619 + 10 340 = 13 959.
4. 369 × 49 = 369 × 9 + 369 × 40 = 3 321 + 14 760 = 18 081.
5. 584 × 38 = 584 × 8 + 584 × 30 = 4 672 + 17 520 = 22 192.
6. 615 × 21 = 615 × 1 + 615 × 20 = 615 + 12 300 = 12 915.
7. 932 × 84 = 932 × 4 + 932 × 80 = 3 728 + 74 560 = 78 288.
8. 247 × 19 = 247 × 9 + 247 × 10 = 2 223 + 2 470 = 4 693.
9. 815 × 63 = 815 × 3 + 815 × 60 = 2 445 + 48 900 = 51 345.
10. 426 × 51 = 426 × 1 + 426 × 50 = 426 + 21 300 = 21 726.
11. 948 × 27 = 948 × 7 + 948 × 20 = 6 636 + 18 960 = 25 596.
12. 531 × 15 = 531 × 5 + 531 × 10 = 2 655 + 5 310 = 7 965.
13. 462 × 27 = 462 × 7 + 462 × 20 = 3 234 + 9 240 = 12 474.
14. 281 × 59 = 281 × 9 + 281 × 50 = 2 529 + 14 050 = 16 579.
15. 537 × 43 = 537 × 3 + 537 × 40 = 1 611 + 21 480 = 23 091.
16. 193 × 42 = 193 × 2 + 193 × 40 = 386 + 7 720 = 8 106.
17. 225 × 53 = 225 × 3 + 225 × 50 = 675 + 11 250 = 11 925.
18. 893 × 37 = 893 × 7 + 893 × 30 = 6 251 + 26 790 = 33 041.
19. 392 × 42 = 392 × 2 + 392 × 40 = 784 + 15 680 = 16 464.
20. 753 × 82 = 753 × 2 + 753 × 80 = 1 506 + 60 240 = 61 746.