Oefening 1 | |||||
1. | 17 ? 13 = 221 |
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2. | 574 ? 341 = 233 |
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3. | 13 ? 11 = 143 |
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4. | 680 ? 164 = 844 |
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5. | 769 ? 76 = 693 |
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6. | 369 ? 77 = 446 |
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7. | 712 ? 693 = 1.405 |
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8. | 894 ? 651 = 243 |
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9. | 690 ? 649 = 41 |
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10. | 433 ? 288 = 721 |
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11. | 19 ? 17 = 323 |
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12. | 14 ? 10 = 140 |
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×
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Oefening 1 | |||||
1. | 17 ? 13 = 221 |
+
|
-
|
×
|
|
2. | 574 ? 341 = 233 |
×
|
+
|
-
|
|
3. | 13 ? 11 = 143 |
×
|
-
|
+
|
|
4. | 680 ? 164 = 844 |
-
|
×
|
+
|
|
5. | 769 ? 76 = 693 |
+
|
-
|
×
|
|
6. | 369 ? 77 = 446 |
+
|
×
|
-
|
|
7. | 712 ? 693 = 1.405 |
-
|
×
|
+
|
|
8. | 894 ? 651 = 243 |
+
|
×
|
-
|
|
9. | 690 ? 649 = 41 |
-
|
×
|
+
|
|
10. | 433 ? 288 = 721 |
+
|
-
|
×
|
|
11. | 19 ? 17 = 323 |
×
|
+
|
-
|
|
12. | 14 ? 10 = 140 |
+
|
×
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-
|