题目内容
| 3.2+0.6= | 7.2-5.2= |
| 6.5+3.4= | 4.3元-0.3元= |
| 15×20= | 60×40= |
| 50×40= | 200÷5= |
解：
| 3.2+0.6=3.8， | 7.2-5.2=2， |
| 6.5+3.4=9.9， | 4.3元-0.3元=4元， |
| 15×20=300， | 60×40=2400， |
| 50×40=2000， | 200÷5=40． |
分析：根据小数加减法和整数乘除法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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