三年级下册 小数的初步认识（口算）
姓名：_______________
学号：_______________
用时：_______________
| 4.0 - 2.0 = | 3.0 - 1.9 = | 7.2 + 0.2 = | 8.1 + 1.7 = |
| 1.4 + 4.3 = | 5.1 + 3.5 = | 5.3 - 3.1 = | 8.2 + 1.2 = |
| 6.8 + 2.9 = | 6.6 - 4.1 = | 8.2 - 3.8 = | 4.7 - 4.3 = |
| 0.9 + 1.8 = | 0.3 - 0.3 = | 4.6 + 2.4 = | 5.3 + 4.3 = |
| 5.6 + 1.8 = | 4.6 + 3.7 = | 9.5 + 0.3 = | 0.6 + 1.5 = |
| 7.5 - 1.0 = | 1.9 - 0.8 = | 5.0 - 4.9 = | 6.0 + 1.4 = |
| 1.2 - 1.1 = | 9.4 - 5.6 = | 7.1 + 1.9 = | 6.4 + 0.8 = |
| 6.7 - 6.6 = | 6.7 + 3.2 = | 3.4 - 2.2 = | 1.0 - 0.7 = |
| 6.2 + 3.2 = | 7.5 + 1.3 = | 6.4 + 0.5 = | 7.4 - 7.3 = |
| 9.8 + 0.1 = | 4.8 + 0.1 = | 6.4 + 1.9 = | 1.6 + 1.4 = |
| 0.4 + 6.4 = | 5.7 - 4.3 = | 8.9 + 0.3 = | 9.5 - 8.9 = |
| 7.9 - 3.2 = | 6.7 - 6.2 = | 1.7 + 6.2 = | 9.7 + 0.2 = |
| 8.1 - 7.9 = | 2.2 - 0.6 = | 4.7 - 3.8 = | 0.2 - 0.2 = |
| 2.9 + 6.7 = | 2.4 + 0.3 = | 2.4 + 7.3 = | 0.8 - 0.5 = |
| 7.8 + 0.7 = | 5.5 - 2.8 = | 5.8 - 3.4 = | 8.7 + 0.9 = |
| 7.8 - 3.7 = | 0.5 + 5.3 = | 2.4 - 0.2 = | 3.7 + 1.3 = |
| 5.3 + 0.9 = | 7.8 + 2.1 = | 2.1 + 0.3 = | 1.9 - 1.8 = |
| 3.9 + 0.4 = | 3.1 + 5.2 = | 7.4 - 5.2 = | 3.1 + 3.8 = |
| 6.6 - 1.3 = | 0.2 + 7.1 = | 9.8 + 0.1 = | 3.3 - 2.8 = |
| 7.2 + 0.6 = | 6.9 + 0.5 = | 8.5 - 4.9 = | 6.1 + 3.8 = |
| 0.8 + 8.2 = | 7.6 - 6.8 = | 5.1 - 3.6 = | 3.5 + 1.0 = |
| 9.6 + 0.1 = | 5.4 + 1.9 = | 2.6 - 1.8 = | 6.9 - 5.0 = |
| 1.8 + 7.3 = | 3.6 + 0.8 = | 1.3 - 1.2 = | 3.3 + 1.6 = |
| 0.1 - 0.1 = | 3.4 + 3.6 = | 7.2 + 1.1 = | 2.7 - 0.7 = |
| 4.0 + 2.6 = | 5.5 - 3.8 = | 9.5 + 0.4 = | 5.0 + 1.1 = |
三年级下册 小数的初步认识（口算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 4.0 - 2.0 = 2 | 3.0 - 1.9 = 1.1 | 7.2 + 0.2 = 7.4 | 8.1 + 1.7 = 9.8 |
| 1.4 + 4.3 = 5.7 | 5.1 + 3.5 = 8.6 | 5.3 - 3.1 = 2.2 | 8.2 + 1.2 = 9.4 |
| 6.8 + 2.9 = 9.7 | 6.6 - 4.1 = 2.5 | 8.2 - 3.8 = 4.4 | 4.7 - 4.3 = 0.4 |
| 0.9 + 1.8 = 2.7 | 0.3 - 0.3 = 0 | 4.6 + 2.4 = 7 | 5.3 + 4.3 = 9.6 |
| 5.6 + 1.8 = 7.4 | 4.6 + 3.7 = 8.3 | 9.5 + 0.3 = 9.8 | 0.6 + 1.5 = 2.1 |
| 7.5 - 1.0 = 6.5 | 1.9 - 0.8 = 1.1 | 5.0 - 4.9 = 0.1 | 6.0 + 1.4 = 7.4 |
| 1.2 - 1.1 = 0.1 | 9.4 - 5.6 = 3.8 | 7.1 + 1.9 = 9 | 6.4 + 0.8 = 7.2 |
| 6.7 - 6.6 = 0.1 | 6.7 + 3.2 = 9.9 | 3.4 - 2.2 = 1.2 | 1.0 - 0.7 = 0.3 |
| 6.2 + 3.2 = 9.4 | 7.5 + 1.3 = 8.8 | 6.4 + 0.5 = 6.9 | 7.4 - 7.3 = 0.1 |
| 9.8 + 0.1 = 9.9 | 4.8 + 0.1 = 4.9 | 6.4 + 1.9 = 8.3 | 1.6 + 1.4 = 3 |
| 0.4 + 6.4 = 6.8 | 5.7 - 4.3 = 1.4 | 8.9 + 0.3 = 9.2 | 9.5 - 8.9 = 0.6 |
| 7.9 - 3.2 = 4.7 | 6.7 - 6.2 = 0.5 | 1.7 + 6.2 = 7.9 | 9.7 + 0.2 = 9.9 |
| 8.1 - 7.9 = 0.2 | 2.2 - 0.6 = 1.6 | 4.7 - 3.8 = 0.9 | 0.2 - 0.2 = 0 |
| 2.9 + 6.7 = 9.6 | 2.4 + 0.3 = 2.7 | 2.4 + 7.3 = 9.7 | 0.8 - 0.5 = 0.3 |
| 7.8 + 0.7 = 8.5 | 5.5 - 2.8 = 2.7 | 5.8 - 3.4 = 2.4 | 8.7 + 0.9 = 9.6 |
| 7.8 - 3.7 = 4.1 | 0.5 + 5.3 = 5.8 | 2.4 - 0.2 = 2.2 | 3.7 + 1.3 = 5 |
| 5.3 + 0.9 = 6.2 | 7.8 + 2.1 = 9.9 | 2.1 + 0.3 = 2.4 | 1.9 - 1.8 = 0.1 |
| 3.9 + 0.4 = 4.3 | 3.1 + 5.2 = 8.3 | 7.4 - 5.2 = 2.2 | 3.1 + 3.8 = 6.9 |
| 6.6 - 1.3 = 5.3 | 0.2 + 7.1 = 7.3 | 9.8 + 0.1 = 9.9 | 3.3 - 2.8 = 0.5 |
| 7.2 + 0.6 = 7.8 | 6.9 + 0.5 = 7.4 | 8.5 - 4.9 = 3.6 | 6.1 + 3.8 = 9.9 |
| 0.8 + 8.2 = 9 | 7.6 - 6.8 = 0.8 | 5.1 - 3.6 = 1.5 | 3.5 + 1.0 = 4.5 |
| 9.6 + 0.1 = 9.7 | 5.4 + 1.9 = 7.3 | 2.6 - 1.8 = 0.8 | 6.9 - 5.0 = 1.9 |
| 1.8 + 7.3 = 9.1 | 3.6 + 0.8 = 4.4 | 1.3 - 1.2 = 0.1 | 3.3 + 1.6 = 4.9 |
| 0.1 - 0.1 = 0 | 3.4 + 3.6 = 7 | 7.2 + 1.1 = 8.3 | 2.7 - 0.7 = 2 |
| 4.0 + 2.6 = 6.6 | 5.5 - 3.8 = 1.7 | 9.5 + 0.4 = 9.9 | 5.0 + 1.1 = 6.1 |