Контрольные задания > 3. Найдите значение выражений. 36+2(93): 54-19 67-39+15-16:43.2 82-57+39-15:3・4:10 4.3:6 7:14 18:23:10 16:23:12.7 72-2-8:4.7 +28 50:5:53:12.7
Вопрос:

3. Найдите значение выражений. 36+2(93): 54-19 67-39+15-16:43.2 82-57+39-15:3・4:10 4.3:6 7:14 18:23:10 16:23:12.7 72-2-8:4.7 +28 50:5:53:12.7

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Ответ:

  1. 36 + 2 ⋅ (9 ⋅ 3) : 54 - 19 = 36 + 2 ⋅ 27 : 54 - 19 = 36 + 54 : 54 - 19 = 36 + 1 - 19 = 37 - 19 = 18
  2. 67 - 39 + 15 - 16 : 4 ⋅ 3 ⋅ 2 = 67 - 39 + 15 - 4 ⋅ 3 ⋅ 2 = 67 - 39 + 15 - 12 ⋅ 2 = 67 - 39 + 15 - 24 = 28 + 15 - 24 = 43 - 24 = 19
  3. 82 - 57 + 39 - 15 : 3 ⋅ 4 : 10 = 82 - 57 + 39 - 5 ⋅ 4 : 10 = 82 - 57 + 39 - 20 : 10 = 82 - 57 + 39 - 2 = 25 + 39 - 2 = 64 - 2 = 62
  4. 4 ⋅ 3 : 6 ⋅ 7 : 14 = 12 : 6 ⋅ 7 : 14 = 2 ⋅ 7 : 14 = 14 : 14 = 1
  5. 18 : 2 ⋅ 3 : 1 ⋅ 0 = 9 ⋅ 3 : 1 ⋅ 0 = 27 : 1 ⋅ 0 = 27 ⋅ 0 = 0
  6. 16 : 2 ⋅ 3 : 12 ⋅ 7 = 8 ⋅ 3 : 12 ⋅ 7 = 24 : 12 ⋅ 7 = 2 ⋅ 7 = 14
  7. 72 - 2 ⋅ 8 : 4 ⋅ 7 + 28 = 72 - 16 : 4 ⋅ 7 + 28 = 72 - 4 ⋅ 7 + 28 = 72 - 28 + 28 = 44 + 28 = 72
  8. 50 : 5 : 5 ⋅ 3 : 12 ⋅ 7 = 10 : 5 ⋅ 3 : 12 ⋅ 7 = 2 ⋅ 3 : 12 ⋅ 7 = 6 : 12 ⋅ 7 = 0.5 ⋅ 7 = 3.5
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