Maak de som uit de tafel van 12 kloppend
Tafels
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2.
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12
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12
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12
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12
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12
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12
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12.
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12
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12
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12
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12
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12
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12
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12
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19.
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12
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20.
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12
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21.
×
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12
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22.
×
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12
9
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23.
×
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12
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24.
×
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12
7
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