| Oefening 1 | |||||
| 1. | 90 ? 11 = 101 |
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×
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| 2. | 45 ? 17 = 62 |
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+
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×
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| 3. | 82 ? 75 = 157 |
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×
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| 4. | 9 ? 1 = 9 |
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×
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| 5. | 10 ? 3 = 30 |
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×
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| 6. | 73 ? 72 = 145 |
+
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×
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| 7. | 78 ? 31 = 47 |
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×
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+
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| 8. | 4 ? 3 = 12 |
+
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×
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| 9. | 67 ? 56 = 123 |
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×
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+
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| 10. | 65 ? 37 = 28 |
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+
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×
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| 11. | 29 ? 10 = 19 |
×
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+
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| 12. | 99 ? 18 = 81 |
+
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×
|
-
|
|
| Oefening 1 | |||||
| 1. | 90 ? 11 = 101 |
+
|
×
|
-
|
|
| 2. | 45 ? 17 = 62 |
-
|
+
|
×
|
|
| 3. | 82 ? 75 = 157 |
+
|
×
|
-
|
|
| 4. | 9 ? 1 = 9 |
+
|
-
|
×
|
|
| 5. | 10 ? 3 = 30 |
+
|
-
|
×
|
|
| 6. | 73 ? 72 = 145 |
+
|
×
|
-
|
|
| 7. | 78 ? 31 = 47 |
-
|
×
|
+
|
|
| 8. | 4 ? 3 = 12 |
+
|
×
|
-
|
|
| 9. | 67 ? 56 = 123 |
-
|
×
|
+
|
|
| 10. | 65 ? 37 = 28 |
-
|
+
|
×
|
|
| 11. | 29 ? 10 = 19 |
×
|
-
|
+
|
|
| 12. | 99 ? 18 = 81 |
+
|
×
|
-
|
|