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Represent equivalent forms of the same number through the use of physical models, diagrams, and number expressions (to 20).
Match.
| 3 + 3 | 3 + 0 | 9 |
| 2+ 3 | 1 + 9 | 10 |
| 2 + 4 | 2 + 8 | 11 |
| 3 + 2 | 3 + 7 | 12 |
| 4 + 0 | 4 + 6 | 13 |
| 4 + 1 | 5 + 5 | 14 |
| 0 + 5 | 6 + 4 | 15 |
| 0 + 4 | 7 + 3 | 1 + 10 |
| 5 + 0 | 8 + 2 |
2 + 9 |
| 0 + 6 | 9 + 1 | |
| 1 + 5 | 10 + 0 | |
| 1 + 4 | 0 + 10 | |
| 4 + 2 | 1 | |
| 5 + 1 | 2 | |
| 1 + 3 | 3 | |
| 2 + 2 | 4 | |
| 3 + 1 | 5 | |
| 1 + 2 | 6 | |
| 2 + 1 | 7 | |
| 0 + 3 | 8 |
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