Maak de som uit de tafel van 10 kloppend
Tafels
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9
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9
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10
9
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10
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10
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10.
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10
9
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6
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10
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15.
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10
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10
8
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10
3
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10
9
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×
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10
6
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10
10
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10
5
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23.
×
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10
7
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24.
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10
10
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