Maak de som uit de tafel van 7 kloppend
Tafels
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9
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7
1
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8.
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7
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7
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7
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7
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7
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7
7
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7
6
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7
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7
1
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7
8
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7
4
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7
10
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7
2
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21.
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7
4
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22.
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7
3
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23.
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7
3
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24.
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7
4
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