题目内容
| 口算、心算． 1+2.5= | 0.6+0.4= | 0.9-0.4= | 1-0.03= |
| 12-0.4= | 0.36+7= | 0.83+0.9= | 7.2+1.2= |
| 1+2.5=3.5 | 0.6+0.4=1 | 0.9-0.4=0.5 | 1-0.03=0.97 |
| 12-0.4=11.6 | 0.36+7=7.36 | 0.83+0.9=1.73 | 7.2+1.2=8.4 |
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题目内容
| 口算、心算． 1+2.5= | 0.6+0.4= | 0.9-0.4= | 1-0.03= |
| 12-0.4= | 0.36+7= | 0.83+0.9= | 7.2+1.2= |
| 1+2.5=3.5 | 0.6+0.4=1 | 0.9-0.4=0.5 | 1-0.03=0.97 |
| 12-0.4=11.6 | 0.36+7=7.36 | 0.83+0.9=1.73 | 7.2+1.2=8.4 |