题目内容
| 1.5-0.7= | 0.37+0.63= | 56×0.1= |
| 5.1+3= | 0.18+0.1= | 280-285= |
| 3×3.1= | 5.6×2= | 5×0.06= |
解：
分析：根据小数加减乘除的计算方法进行计算．
点评：口算时，注意运算符号和数据，然后再进一步计算．
| 1.5-0.7=0.8， | 0.37+0.63=1， | 56×0.1=5.6， |
| 5.1+3=8.1， | 0.18+0.1=0.28， | 280-285=-5， |
| 3×3.1=9.3， | 5.6×2=11.2， | 5×0.06=0.3． |
分析：根据小数加减乘除的计算方法进行计算．
点评：口算时，注意运算符号和数据，然后再进一步计算．
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