三年级下册 小数的初步认识（口算）
姓名：_______________
学号：_______________
用时：_______________
| 8.1 + 1.9 = | 7.5 - 2.2 = | 0.5 + 2.4 = | 0.6 + 4.7 = |
| 2.1 - 1.0 = | 4.3 + 4.9 = | 0.7 - 0.6 = | 2.5 + 3.4 = |
| 7.9 + 0.4 = | 8.6 + 0.4 = | 5.5 + 1.7 = | 8.1 + 0.4 = |
| 5.9 - 4.1 = | 7.5 - 4.7 = | 4.1 - 1.5 = | 5.2 - 4.4 = |
| 7.4 + 2.4 = | 2.6 + 1.0 = | 5.1 - 4.3 = | 2.9 - 1.8 = |
| 1.1 + 6.4 = | 9.4 + 0.4 = | 3.0 + 2.0 = | 2.5 + 5.0 = |
| 6.4 - 6.1 = | 3.2 - 1.8 = | 4.9 - 0.6 = | 5.9 + 4.0 = |
| 9.5 - 8.9 = | 5.6 + 1.0 = | 1.8 - 0.2 = | 4.6 - 3.8 = |
| 4.5 - 1.7 = | 8.0 + 1.3 = | 2.9 - 1.5 = | 5.1 - 0.8 = |
| 5.1 + 2.4 = | 3.0 - 1.4 = | 4.6 - 4.4 = | 7.4 + 2.5 = |
| 4.8 - 1.0 = | 1.6 + 7.9 = | 3.5 - 0.1 = | 8.5 - 5.3 = |
| 6.5 - 0.8 = | 0.5 - 0.1 = | 1.4 + 7.7 = | 5.0 + 2.8 = |
| 6.5 - 4.9 = | 6.6 - 3.9 = | 4.4 - 1.3 = | 2.7 - 0.7 = |
| 3.3 + 2.6 = | 0.9 - 0.3 = | 4.9 + 0.2 = | 3.1 + 2.1 = |
| 3.4 + 2.0 = | 2.3 + 5.2 = | 9.5 - 3.6 = | 9.7 - 6.9 = |
| 5.9 + 3.6 = | 4.3 - 4.1 = | 0.3 - 0.3 = | 2.9 - 2.4 = |
| 8.8 + 0.5 = | 4.7 - 1.8 = | 7.6 - 0.8 = | 9.4 - 3.8 = |
| 4.1 - 2.1 = | 2.0 + 2.8 = | 9.8 + 0.2 = | 9.8 + 0.2 = |
| 3.5 - 3.0 = | 8.4 + 0.6 = | 3.2 + 1.6 = | 9.4 + 0.5 = |
| 6.2 - 5.9 = | 6.5 - 1.4 = | 9.9 - 4.0 = | 7.9 + 0.9 = |
| 7.9 - 7.0 = | 1.5 - 1.5 = | 6.9 + 1.6 = | 9.2 + 0.3 = |
| 9.6 - 3.7 = | 9.4 - 1.9 = | 8.3 - 7.0 = | 1.9 + 0.7 = |
| 2.0 - 0.8 = | 7.2 + 1.0 = | 1.3 + 4.1 = | 3.7 - 2.6 = |
| 9.6 + 0.3 = | 3.6 - 1.2 = | 4.9 + 5.0 = | 8.9 + 0.4 = |
| 9.2 + 0.7 = | 9.9 - 1.9 = | 2.1 - 0.3 = | 5.3 - 1.3 = |
三年级下册 小数的初步认识（口算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 8.1 + 1.9 = 10 | 7.5 - 2.2 = 5.3 | 0.5 + 2.4 = 2.9 | 0.6 + 4.7 = 5.3 |
| 2.1 - 1.0 = 1.1 | 4.3 + 4.9 = 9.2 | 0.7 - 0.6 = 0.1 | 2.5 + 3.4 = 5.9 |
| 7.9 + 0.4 = 8.3 | 8.6 + 0.4 = 9 | 5.5 + 1.7 = 7.2 | 8.1 + 0.4 = 8.5 |
| 5.9 - 4.1 = 1.8 | 7.5 - 4.7 = 2.8 | 4.1 - 1.5 = 2.6 | 5.2 - 4.4 = 0.8 |
| 7.4 + 2.4 = 9.8 | 2.6 + 1.0 = 3.6 | 5.1 - 4.3 = 0.8 | 2.9 - 1.8 = 1.1 |
| 1.1 + 6.4 = 7.5 | 9.4 + 0.4 = 9.8 | 3.0 + 2.0 = 5 | 2.5 + 5.0 = 7.5 |
| 6.4 - 6.1 = 0.3 | 3.2 - 1.8 = 1.4 | 4.9 - 0.6 = 4.3 | 5.9 + 4.0 = 9.9 |
| 9.5 - 8.9 = 0.6 | 5.6 + 1.0 = 6.6 | 1.8 - 0.2 = 1.6 | 4.6 - 3.8 = 0.8 |
| 4.5 - 1.7 = 2.8 | 8.0 + 1.3 = 9.3 | 2.9 - 1.5 = 1.4 | 5.1 - 0.8 = 4.3 |
| 5.1 + 2.4 = 7.5 | 3.0 - 1.4 = 1.6 | 4.6 - 4.4 = 0.2 | 7.4 + 2.5 = 9.9 |
| 4.8 - 1.0 = 3.8 | 1.6 + 7.9 = 9.5 | 3.5 - 0.1 = 3.4 | 8.5 - 5.3 = 3.2 |
| 6.5 - 0.8 = 5.7 | 0.5 - 0.1 = 0.4 | 1.4 + 7.7 = 9.1 | 5.0 + 2.8 = 7.8 |
| 6.5 - 4.9 = 1.6 | 6.6 - 3.9 = 2.7 | 4.4 - 1.3 = 3.1 | 2.7 - 0.7 = 2 |
| 3.3 + 2.6 = 5.9 | 0.9 - 0.3 = 0.6 | 4.9 + 0.2 = 5.1 | 3.1 + 2.1 = 5.2 |
| 3.4 + 2.0 = 5.4 | 2.3 + 5.2 = 7.5 | 9.5 - 3.6 = 5.9 | 9.7 - 6.9 = 2.8 |
| 5.9 + 3.6 = 9.5 | 4.3 - 4.1 = 0.2 | 0.3 - 0.3 = 0 | 2.9 - 2.4 = 0.5 |
| 8.8 + 0.5 = 9.3 | 4.7 - 1.8 = 2.9 | 7.6 - 0.8 = 6.8 | 9.4 - 3.8 = 5.6 |
| 4.1 - 2.1 = 2 | 2.0 + 2.8 = 4.8 | 9.8 + 0.2 = 10 | 9.8 + 0.2 = 10 |
| 3.5 - 3.0 = 0.5 | 8.4 + 0.6 = 9 | 3.2 + 1.6 = 4.8 | 9.4 + 0.5 = 9.9 |
| 6.2 - 5.9 = 0.3 | 6.5 - 1.4 = 5.1 | 9.9 - 4.0 = 5.9 | 7.9 + 0.9 = 8.8 |
| 7.9 - 7.0 = 0.9 | 1.5 - 1.5 = 0 | 6.9 + 1.6 = 8.5 | 9.2 + 0.3 = 9.5 |
| 9.6 - 3.7 = 5.9 | 9.4 - 1.9 = 7.5 | 8.3 - 7.0 = 1.3 | 1.9 + 0.7 = 2.6 |
| 2.0 - 0.8 = 1.2 | 7.2 + 1.0 = 8.2 | 1.3 + 4.1 = 5.4 | 3.7 - 2.6 = 1.1 |
| 9.6 + 0.3 = 9.9 | 3.6 - 1.2 = 2.4 | 4.9 + 5.0 = 9.9 | 8.9 + 0.4 = 9.3 |
| 9.2 + 0.7 = 9.9 | 9.9 - 1.9 = 8 | 2.1 - 0.3 = 1.8 | 5.3 - 1.3 = 4 |