Краткое пояснение: Решим данные примеры, выполняя действия в правильном порядке: сначала умножение и деление, затем сложение и вычитание, а также учитывая приоритет действий в скобках.
Решение:
- 1) 154 ⋅ 78 + 3 900 : 65 - 216 - 53 =
- 154 ⋅ 78 = 12 012
- 3 900 : 65 = 60
- 12 012 + 60 = 12 072
- 12 072 - 216 = 11 856
- 11 856 - 53 = 11 803
- 2) 16 728 : 82 - 5 580 : 45 + 726 ⋅ 29 =
- 16 728 : 82 = 204
- 5 580 : 45 = 124
- 726 ⋅ 29 = 21 054
- 204 - 124 = 80
- 80 + 21 054 = 21 134
- 3) (39 002 - 37 236) ⋅ 205 + 115 ⋅ 78 =
- 39 002 - 37 236 = 1 766
- 1 766 ⋅ 205 = 361 030
- 115 ⋅ 78 = 8 970
- 361 030 + 8 970 = 370 000
- 4) 875 ⋅ 480 - 406 ⋅ (50 004 - 48 986) =
- 875 ⋅ 480 = 420 000
- 50 004 - 48 986 = 1 018
- 406 ⋅ 1 018 = 413 308
- 420 000 - 413 308 = 6 692
- 5) (21 518 : 53 - 24 332 : 79) ⋅ 267 =
- 21 518 : 53 = 406
- 24 332 : 79 = 308
- 406 - 308 = 98
- 98 ⋅ 267 = 26 166
- 6) (53 734 : 67 - 59 925 : 85) ⋅ 436 =
- 53 734 : 67 = 802
- 59 925 : 85 = 705
- 802 - 705 = 97
- 97 ⋅ 436 = 42 292
- 7) (327 ⋅ 84 + 207 673) : 47 =
- 327 ⋅ 84 = 27 468
- 27 468 + 207 673 = 235 141
- 235 141 : 47 = 4 907,25
- 8) (924 ⋅ 93 + 30 271) : 29 =
- 924 ⋅ 93 = 86 052
- 86 052 + 30 271 = 116 323
- 116 323 : 29 = 4 011,13
- 9) (216 ⋅ 28 - 463 680 : 92) : (86 ⋅ 64 - 4 496) =
- 216 ⋅ 28 = 6 048
- 463 680 : 92 = 5 040
- 6 048 - 5 040 = 1 008
- 86 ⋅ 64 = 5 504
- 5 504 - 4 496 = 1 008
- 1 008 : 1 008 = 1
- 10) (1 004 ⋅ 19 - 75 110 : 37) : (408 ⋅ 435 – 177 479) =
- 1 004 ⋅ 19 = 19 076
- 75 110 : 37 = 2 030
- 19 076 - 2 030 = 17 046
- 408 ⋅ 435 = 177 480
- 177 480 - 177 479 = 1
- 17 046 : 1 = 17 046
- 11) 61 - (1 428 : 136 + 4,3) ⋅ 3,4 =
- 1 428 : 136 = 10,5
- 10,5 + 4,3 = 14,8
- 14,8 ⋅ 3,4 = 50,32
- 61 - 50,32 = 10,68
- 12) 40 - (2 550 : 204 - 6,9) ⋅ 6,7 =
- 2 550 : 204 = 12,5
- 12,5 - 6,9 = 5,6
- 5,6 ⋅ 6,7 = 37,52
- 40 - 37,52 = 2,48
- 13) 37,72 : 4,6 - (1,43 + 2,728) ⋅ 1,5 =
- 37,72 : 4,6 = 8,2
- 1,43 + 2,728 = 4,158
- 4,158 ⋅ 1,5 = 6,237
- 8,2 - 6,237 = 1,963