Solve.
| 1 a. |
_________ + 800 + 80 + 7 = 2887
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| 1 b. |
_________ + 1000 + 800 + 70 = 1875
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| 2 a. |
7000 + 0 + ____________ + 0 = 7040
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| 2 b. |
1 + 20 + ____________ + 5000 = 5321
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| 3 a. |
9 + ____________ + 300 + 9000 = 9309
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| 3 b. |
____________ + 900 + 9000 + 40 = 9942
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| 4 a. |
6 + 20 + 900 + ____________ = 6926
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| 4 b. |
____________ + 900 + 9000 + 60 = 9963
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| 5 a. |
9 + 400 + 4000 + ____________ = 4479
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| 5 b. |
6 + 600 + _________ + 30 = 1636
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| 6 a. |
____________ + 200 + 5000 + 40 = 5241
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| 6 b. |
____________ + 0 + 900 + 9000 = 9905
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| 7 a. |
8 + ____________ + 200 + 7000 = 7248
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| 7 b. |
2 + 50 + 0 + ____________ = 9052
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| 8 a. |
8 + _________ + 200 + 10 = 2218
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| 8 b. |
70 + _________ + 100 + 3000 = 3175
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