【二十以内减法口诀表?】在小学数学的学习中，减法是基础运算之一。对于低年级的学生来说，掌握“二十以内减法口诀表”有助于提高计算速度和准确性。虽然传统的“九九乘法表”更为常见，但针对减法的口诀表同样重要，尤其是在学习加减法结合时。
以下是整理出的“二十以内减法口诀表”，以表格形式呈现，便于记忆和查阅。
二十以内减法口诀表
| 被减数 | 减数 | 差 |
| 10 | 1 | 9 |
| 10 | 2 | 8 |
| 10 | 3 | 7 |
| 10 | 4 | 6 |
| 10 | 5 | 5 |
| 10 | 6 | 4 |
| 10 | 7 | 3 |
| 10 | 8 | 2 |
| 10 | 9 | 1 |
| 10 | 10 | 0 |
| 11 | 1 | 10 |
| 11 | 2 | 9 |
| 11 | 3 | 8 |
| 11 | 4 | 7 |
| 11 | 5 | 6 |
| 11 | 6 | 5 |
| 11 | 7 | 4 |
| 11 | 8 | 3 |
| 11 | 9 | 2 |
| 11 | 10 | 1 |
| 12 | 1 | 11 |
| 12 | 2 | 10 |
| 12 | 3 | 9 |
| 12 | 4 | 8 |
| 12 | 5 | 7 |
| 12 | 6 | 6 |
| 12 | 7 | 5 |
| 12 | 8 | 4 |
| 12 | 9 | 3 |
| 12 | 10 | 2 |
| 13 | 1 | 12 |
| 13 | 2 | 11 |
| 13 | 3 | 10 |
| 13 | 4 | 9 |
| 13 | 5 | 8 |
| 13 | 6 | 7 |
| 13 | 7 | 6 |
| 13 | 8 | 5 |
| 13 | 9 | 4 |
| 13 | 10 | 3 |
| 14 | 1 | 13 |
| 14 | 2 | 12 |
| 14 | 3 | 11 |
| 14 | 4 | 10 |
| 14 | 5 | 9 |
| 14 | 6 | 8 |
| 14 | 7 | 7 |
| 14 | 8 | 6 |
| 14 | 9 | 5 |
| 14 | 10 | 4 |
| 15 | 1 | 14 |
| 15 | 2 | 13 |
| 15 | 3 | 12 |
| 15 | 4 | 11 |
| 15 | 5 | 10 |
| 15 | 6 | 9 |
| 15 | 7 | 8 |
| 15 | 8 | 7 |
| 15 | 9 | 6 |
| 15 | 10 | 5 |
| 16 | 1 | 15 |
| 16 | 2 | 14 |
| 16 | 3 | 13 |
| 16 | 4 | 12 |
| 16 | 5 | 11 |
| 16 | 6 | 10 |
| 16 | 7 | 9 |
| 16 | 8 | 8 |
| 16 | 9 | 7 |
| 16 | 10 | 6 |
| 17 | 1 | 16 |
| 17 | 2 | 15 |
| 17 | 3 | 14 |
| 17 | 4 | 13 |
| 17 | 5 | 12 |
| 17 | 6 | 11 |
| 17 | 7 | 10 |
| 17 | 8 | 9 |
| 17 | 9 | 8 |
| 17 | 10 | 7 |
| 18 | 1 | 17 |
| 18 | 2 | 16 |
| 18 | 3 | 15 |
| 18 | 4 | 14 |
| 18 | 5 | 13 |
| 18 | 6 | 12 |
| 18 | 7 | 11 |
| 18 | 8 | 10 |
| 18 | 9 | 9 |
| 18 | 10 | 8 |
| 19 | 1 | 18 |
| 19 | 2 | 17 |
| 19 | 3 | 16 |
| 19 | 4 | 15 |
| 19 | 5 | 14 |
| 19 | 6 | 13 |
| 19 | 7 | 12 |
| 19 | 8 | 11 |
| 19 | 9 | 10 |
| 19 | 10 | 9 |
| 20 | 1 | 19 |
| 20 | 2 | 18 |
| 20 | 3 | 17 |
| 20 | 4 | 16 |
| 20 | 5 | 15 |
| 20 | 6 | 14 |
| 20 | 7 | 13 |
| 20 | 8 | 12 |
| 20 | 9 | 11 |
| 20 | 10 | 10 |
总结：
二十以内减法口诀表是小学生学习基本运算的重要工具。通过反复练习这些口诀，学生可以更快地掌握减法技巧，并为后续更复杂的数学运算打下坚实的基础。建议家长或老师在教学过程中结合实际例子和游戏方式，帮助孩子更好地理解和记忆这些内容。
