3-6-2-5

5 + a = 8 0 1 2 3 4 5

        5 + a = 8
              a = 8 - 5
              a = 3
        K: 5 + 3 = 8

7. Раскрась значение переменной.

8. Вычисли значение переменной.

20 + a = 28
a = .........................
a = ..........
Проверка: ..............................

35 + b = 42
b = .........................
b = ..........
Проверка: ..............................

48 + c = 55
c = .........................
c = ..........
Проверка: ..............................

57 + d = 63
.............................................
..............................
..................................................

69 + e = 75
.............................................
..............................
..................................................

46 + f = 54
..............................................
..............................
..................................................

9. Найди и обведи значение переменной.

10 +   x   = 22    x = .....
x + 27 = 36    x = .....
x + 63 = 70    x = .....
28 +   x   = 39    x = .....
50 +   x   =180    x = .....
x +    9 =900    x = .....
x + 28 = 54    x = .....
8 +   x = 800    x = .....

12                                   63
                        7                                        133
     10
                                 120
       130
   9                                       891
            26                                                82
792

Остались числа: ....................................