| 10×7= | 40×3= | 700×5= | 3000×3= | 600×5= | 500×8= | + = |
- = | 1- = | + = | - = | 1- = | 47÷6=… | 53÷9=… |
| 10×7=70, | 40×3=120, | 700×5=3500, | 3000×3=9000, | 600×5=3000, | 500×8=4000, | + = , |
- = , | 1- = , | + = , | - = , | 1- = , | 47÷6=7…5, | 53÷9=5…8. |
分析:根据整数乘除法和分数加减法的计算方法进行计算即可.
点评:口算时,注意运算符号和数据,然后再进一步计算即可.
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