题目内容
| 口算. 2-0.7= | 7.8+2= | 5.74+0.26= | 0.06+0.5= |
| 4.6+5.4= | 7.52-2.52= | 1-0.25= | 0.9-0.09= |
| 2.8+28= | 0.6+0.7= | 0.64-0.6= | 3.5-2.8= |
| 2-0.7=1.3, | 7.8+2=9.8, | 5.74+0.26=6, | 0.06+0.5=0.56, |
| 4.6+5.4=10, | 7.52-2.52=5, | 1-0.25=0.75, | 0.9-0.09=0.81, |
| 2.8+28=30.8, | 0.6+0.7=1.3, | 0.64-0.6=0.04, | 3.5-2.8=0.7. |
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