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1. \(\ldots + 6 = 100\)
2. \(26 + \ldots = 30\)
3. \(34 + \ldots = 40\)
4. \(\ldots + 2 = 30\)
5. \(91 + \ldots = 100\)
6. \(\ldots + 9 = 40\)
7. \(\ldots + 5 = 60\)
8. \(43 + \ldots = 50\)
9. \(\ldots + 3 = 40\)
10. \(95 + \ldots = 100\)
11. \(\ldots + 8 = 50\)
12. \(87 + \ldots = 90\)

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Verbetersleutel

1. \(94 + 6 =100\)
2. \(26 + 4 = 30\)
3. \(34 + 6 = 40\)
4. \(28 + 2 =30\)
5. \(91 + 9 = 100\)
6. \(31 + 9 =40\)
7. \(55 + 5 =60\)
8. \(43 + 7 = 50\)
9. \(37 + 3 =40\)
10. \(95 + 5 = 100\)
11. \(42 + 8 =50\)
12. \(87 + 3 = 90\)