Задание 1. Найдите значения числовых выражений: 1) 30 (6880: 4 + 17.48) - 120; 2) 34 (450 - 62. 1) + 8840 : 22; 3) 8954: (32 - 23) + 98. 43 + 734; 4) 2471 + (73 440 : 20 - 18.0) · 2; 5) 4. 352 + (567 :3).45 -0.63; 6) 750 + (480.37 - 41.25). 95; 7) 25: : (112 - 10.12) + 3690 : 21; 8) 9971 + 53. (40:40 +315.67); 9) 6734 : (33 – 52) + 643 32 + 42; 10) 84 (2400 + 74 . 1) + 12345 : 31.

Решим по действиям каждое выражение:

1) 30 ⋅ (6880 ∶ 4 + 17 ⋅ 48) - 120 = 30 ⋅ (1720 + 816) - 120 = 30 ⋅ 2536 - 120 = 76080 - 120 = 76 960

2) 3⁴ ⋅ (450 - 6² ⋅ 1) + 8840 ∶ 2² = 81 ⋅ (450 - 36) + 8840 ∶ 4 = 81 ⋅ 414 + 2210 = 33534 + 2210 = 35744

3) 8954 ∶ (3² - 2³) + 98 ⋅ 4³ + 734 = 8954 ∶ (9 - 8) + 98 ⋅ 64 + 734 = 8954 ∶ 1 + 6272 + 734 = 8954 + 6272 + 734 = 15 960

4) 2471 + (73 440 ∶ 20 - 18 ⋅ 0) ⋅ 2 = 2471 + (3672 - 0) ⋅ 2 = 2471 + 3672 ⋅ 2 = 2471 + 7344 = 9815

5) 4 ⋅ 35² + (567 ∶ 3) ⋅ 45 - 0 ⋅ 6³ = 4 ⋅ 1225 + 189 ⋅ 45 - 0 ⋅ 216 = 4900 + 8505 - 0 = 13 405

6) 750 + (480 ⋅ 37 - 41 ⋅ 25) ⋅ 95 = 750 + (17 760 - 1025) ⋅ 95 = 750 + 16 735 ⋅ 95 = 750 + 1 589 825 = 1 590 575

7) 2⁵ ∶ (11² - 10 ⋅ 12) + 3690 ∶ 2¹ = 32 ∶ (121 - 120) + 3690 ∶ 2 = 32 ∶ 1 + 1845 = 32 + 1845 = 1877

8) 9971 + 5³ ⋅ (40 ∶ 40 + 315 ⋅ 67) = 9971 + 125 ⋅ (1 + 21 105) = 9971 + 125 ⋅ 21 106 = 9971 + 2 638 250 = 2 648 221

9) 6734 ∶ (3³ – 5²) + 643 ⋅ 3² + 4² = 6734 ∶ (27 – 25) + 643 ⋅ 9 + 16 = 6734 ∶ 2 + 5787 + 16 = 3367 + 5787 + 16 = 9170

10) 8⁴ ⋅ (2400 + 7⁴ ⋅ 1) + 12345 ∶ 3¹ = 4096 ⋅ (2400 + 2401 ⋅ 1) + 12345 ∶ 3 = 4096 ⋅ (2400 + 2401) + 4115 = 4096 ⋅ 4801 + 4115 = 19 664 896 + 4115 = 19 669 011

Ответ: 1) 76960; 2) 35744; 3) 15960; 4) 9815; 5) 13405; 6) 1590575; 7) 1877; 8) 2648221; 9) 9170; 10) 19669011.