20以内加减法练习
| 17 + 13 = | 16 - 13 = | 19 + 18 = | 17 - 12 = |
| 12 + 19 = | 12 + 12 = | 14 + 18 = | 13 - 7 = |
| 11 + 13 = | 18 + 10 = | 12 + 10 = | 17 - 10 = |
| 17 + 17 = | 15 - 12 = | 16 - 10 = | 13 + 18 = |
| 12 + 15 = | 11 - 9 = | 12 - 9 = | 13 + 13 = |
| 18 + 11 = | 13 - 12 = | 11 - 4 = | 18 - 14 = |
| 16 - 9 = | 12 - 4 = | 16 - 7 = | 18 + 14 = |
| 17 + 19 = | 19 + 13 = | 10 + 19 = | 14 - 8 = |
| 19 - 18 = | 15 - 13 = | 11 + 15 = | 18 - 10 = |
| 15 + 13 = | 12 - 3 = | 10 + 18 = | 14 + 19 = |
| 16 + 13 = | 15 - 9 = | 14 + 13 = | 11 + 14 = |
| 14 - 5 = | 12 + 11 = | 13 + 12 = | 13 + 14 = |
| 12 - 7 = | 13 - 4 = | 15 - 6 = | 12 - 11 = |
| 14 + 11 = | 13 - 9 = | 11 - 5 = | 10 + 11 = |
| 11 - 11 = | 14 + 17 = | 19 - 14 = | 19 - 16 = |
| 19 - 10 = | 16 - 15 = | 11 + 17 = | 10 + 12 = |
| 15 + 15 = | 14 - 11 = | 12 + 14 = | 12 + 16 = |
| 17 - 14 = | 17 + 12 = | 13 - 11 = | 16 - 8 = |
| 15 - 7 = | 14 - 7 = | 16 + 15 = | 13 + 10 = |
| 12 + 18 = | 19 + 10 = | 16 + 19 = | 13 - 8 = |
| 10 + 10 = | 16 + 18 = | 19 + 15 = | 11 + 11 = |
| 12 + 13 = | 17 - 17 = | 13 + 17 = | 19 - 13 = |
| 15 + 12 = | 10 + 16 = | 11 - 10 = | 18 - 18 = |
| 19 - 19 = | 11 + 12 = | 19 + 14 = | 15 + 19 = |
| 15 - 11 = | 18 - 15 = | 16 - 16 = | 15 - 10 = |