Краткое пояснение: Выполним указанные действия столбиком и устно.
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409 801 - 586 = 409215
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50 728 + 6 183 = 56911
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867 + 995 540 = 996407
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50 308 ⋅ 4 = 201232
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320 ⋅ 406 = 1300
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258 ⋅ 137 = 35346
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830 605 : 5 = 166121
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17 280 : 36 = 480
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109 296 : 297 = 368
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(100 – 1) ⋅ 8 = 99 ⋅ 8 = 792
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(100 – 2) ⋅ 4 = 98 ⋅ 4 = 392
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(100 – 1) ⋅ 6 = 99 ⋅ 6 = 594
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(100 – 2) ⋅ 3 = 98 ⋅ 3 = 294
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99 ⋅ 7 = 693
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98 ⋅ 5 = 490
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99 ⋅ 9 = 891
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97 ⋅ 3 = 291
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101 ⋅ 7 = 707
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101 ⋅ 9 = 909
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1 001 ⋅ 4 = 4004
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1 001 ⋅ 5 = 5005
Ответ: Выполнено все действия.