12. 1) 36:3 42:3 30:2 65-64:8⋅3 82:2 78:6 74:2 9⋅(14-9)-8 2) □:8=0 17⋅□=17 24:□=24 □⋅8=0 17+□=17 24-□=24

Ответ: 1) 12; 14; 10; 41; 2) 0; 1; 1; 0; 1; 0

1. 1) Вычисляем:

   • \[36 : 3 = 12\]
   • \[42 : 3 = 14\]
   • \[30 : 2 = 15\]
   • \[65 - 64 : 8 \cdot 3 = 65 - 8 \cdot 3 = 65 - 24 = 41\]
   • \[82 : 2 = 41\]
   • \[78 : 6 = 13\]
   • \[74 : 2 = 37\]
   • \[9 \cdot (14 - 9) - 8 = 9 \cdot 5 - 8 = 45 - 8 = 37\]

2. 2) Решаем уравнения:

   • \[\Box : 8 = 0 \Rightarrow \Box = 0 \cdot 8 = 0\]
   • \[17 \cdot \Box = 17 \Rightarrow \Box = 17 : 17 = 1\]
   • \[24 : \Box = 24 \Rightarrow \Box = 24 : 24 = 1\]
   • \[\Box \cdot 8 = 0 \Rightarrow \Box = 0 : 8 = 0\]
   • \[17 + \Box = 17 \Rightarrow \Box = 17 - 17 = 0\]
   • \[24 - \Box = 24 \Rightarrow \Box = 24 - 24 = 0\]

Ответ: 1) 12; 14; 10; 41; 2) 0; 1; 1; 0; 1; 0