Вопрос:

№3. Реши примеры: 1) 12 + 2 × 9 − 25; 2) 35 − 2 × 7 + 24; 3) 62 − 3 × 9 − 12; 4) 32 : 8 × 5; 5) 16 : 4 × 3; 6) 27 : 9 × 6; 7) 65 × 0 : 6; 8) 0 × 9 + 14; 9) 14 : 2 : 7.

Ответ:

  1. \(12 + 2 \times 9 - 25 = 12 + 18 - 25 = 5\);
  2. \(35 - 2 \times 7 + 24 = 35 - 14 + 24 = 45\);
  3. \(62 - 3 \times 9 - 12 = 62 - 27 - 12 = 23\);
  4. \(32 : 8 \times 5 = 4 \times 5 = 20\);
  5. \(16 : 4 \times 3 = 4 \times 3 = 12\);
  6. \(27 : 9 \times 6 = 3 \times 6 = 18\);
  7. \(65 \times 0 : 6 = 0 : 6 = 0\);
  8. \(0 \times 9 + 14 = 0 + 14 = 14\);
  9. \(14 : 2 : 7 = 7 : 7 = 1\).