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- \(1 + 9 = \)
- \(7 + 0 = \)
- \(9 + 0 = \)
- \(0 + 6 = \)
- \(1 + 7 = \)
- \(1 + 4 = \)
- \(8 + 2 = \)
- \(6 + 3 = \)
- \(4 + 3 = \)
- \(0 + 7 = \)
- \(4 + 2 = \)
- \(3 + 0 = \)
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Verbetersleutel
- \(1 + 9 = 10\)
- \(7 + 0 = 7\)
- \(9 + 0 = 9\)
- \(0 + 6 = 6\)
- \(1 + 7 = 8\)
- \(1 + 4 = 5\)
- \(8 + 2 = 10\)
- \(6 + 3 = 9\)
- \(4 + 3 = 7\)
- \(0 + 7 = 7\)
- \(4 + 2 = 6\)
- \(3 + 0 = 3\)