أجمع العدد إلى نفسه , ثم أجد ناتج الطرح:
6. 6 + 6 = ....
12 - 6 = .... الحل:
6 + 6 = 12 12 - 6 = 6
7. 2 + 2 =
...
4 - 2 = ... الحل:
2 + 2 = 4 4 - 2 = 2
8. 4 + 4 =
... 8 - 4 = ... الحل:
4 + 4 = 8
8 - 4 = 4
9. 1 + 1 = ...
2 - 1 = ...
الحل: 1 + 1 = 2 2 - 1 = 1
10. 3 + 3 =
...
6 - 3 = ...
الحل: 3 + 3 = 6 6 - 3 = 3
11. 5 + 5 =
...
10 - 5 = ...
الحل: 5 + 5 = 10 10 - 5 = 5
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