20. Вычисли и проверь решение. 1) 36 – 14 45 + 23 2) 73 – 18 26 + 59 79-57 64 – 38 62 + 27 29 + 46

Ответ: 22, 68, 55, 85, 22, 26, 89, 75.

• 36 - 14 = 22

     36
  -  14
    ---
     22
    

  Проверка:

     22
  +  14
    ---
     36
    

• 45 + 23 = 68

     45
  +  23
    ---
     68
    

  Проверка:

     68
  -  23
    ---
     45
    

• 73 - 18 = 55

     73
  -  18
    ---
     55
    

  Проверка:

     55
  +  18
    ---
     73
    

• 26 + 59 = 85

     26
  +  59
    ---
     85
    

  Проверка:

     85
  -  59
    ---
     26
    

• 79 - 57 = 22

     79
  -  57
    ---
     22
    

  Проверка:

     22
  +  57
    ---
     79
    

• 64 - 38 = 26

     64
  -  38
    ---
     26
    

  Проверка:

     26
  +  38
    ---
     64
    

• 62 + 27 = 89

     62
  +  27
    ---
     89
    

  Проверка:

     89
  -  27
    ---
     62
    

• 29 + 46 = 75

     29
  +  46
    ---
     75
    

  Проверка:

     75
  -  46
    ---
     29
    

Ответ: 22, 68, 55, 85, 22, 26, 89, 75.