| Oefening 1 | |||||
| 1. | 71 ? 49 = 120 |
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×
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| 2. | 4 ? 4 = 16 |
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×
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| 3. | 81 ? 51 = 132 |
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| 4. | 10 ? 2 = 20 |
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| 5. | 83 ? 53 = 30 |
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×
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| 6. | 9 ? 5 = 45 |
×
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| 7. | 87 ? 27 = 114 |
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×
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| 8. | 2 ? 1 = 2 |
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×
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| 9. | 65 ? 22 = 43 |
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×
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| 10. | 89 ? 19 = 70 |
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| 11. | 47 ? 22 = 25 |
×
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| 12. | 9 ? 2 = 18 |
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+
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×
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| Oefening 1 | |||||
| 1. | 71 ? 49 = 120 |
-
|
+
|
×
|
|
| 2. | 4 ? 4 = 16 |
+
|
-
|
×
|
|
| 3. | 81 ? 51 = 132 |
×
|
+
|
-
|
|
| 4. | 10 ? 2 = 20 |
×
|
+
|
-
|
|
| 5. | 83 ? 53 = 30 |
-
|
×
|
+
|
|
| 6. | 9 ? 5 = 45 |
×
|
-
|
+
|
|
| 7. | 87 ? 27 = 114 |
+
|
×
|
-
|
|
| 8. | 2 ? 1 = 2 |
+
|
×
|
-
|
|
| 9. | 65 ? 22 = 43 |
+
|
-
|
×
|
|
| 10. | 89 ? 19 = 70 |
×
|
-
|
+
|
|
| 11. | 47 ? 22 = 25 |
×
|
+
|
-
|
|
| 12. | 9 ? 2 = 18 |
-
|
+
|
×
|
|