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- \(9 : 9 = \)
- \(7 \times 9 = \)
- \(1 \times 9 = \)
- \(8 \times 9 = \)
- \(81 : 9 = \)
- \(9 \times 9 = \)
- \(27 : 9 = \)
- \(3 \times 9 = \)
- \(63 : 9 = \)
- \(10 \times 9 = \)
- \(90 : 9 = \)
- \(4 \times 9 = \)
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Verbetersleutel
- \(9 : 9 = 1\)
- \(7 \times 9 = 63\)
- \(1 \times 9 = 9\)
- \(8 \times 9 = 72\)
- \(81 : 9 = 9\)
- \(9 \times 9 = 81\)
- \(27 : 9 = 3\)
- \(3 \times 9 = 27\)
- \(63 : 9 = 7\)
- \(10 \times 9 = 90\)
- \(90 : 9 = 10\)
- \(4 \times 9 = 36\)