примеры на +                                                                               примеры на -

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2 + 2                                                                                             20 - 6

3 + 3                                                                                             21 - 6

4+4                                                                                                                                                                              5 + 5                                                                                     22 - 6 

6 + 6                                                                                            23 - 6

7 + 7

8 + 8

9 + 9

10 + 10

11 + 11

12 + 12

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15 + 15