1. 直接写出得数。      

1.3+0.37=          2.5×4=            6.4÷0.4=          7.5+0.5÷2=

6.2-2.6=           14÷8=            27÷0.27=         3÷0.3-0.3÷3=

2. 列竖式计算，带“＊”要验算。

76.8÷12=                    48.3÷3.5=                   2.7÷0.25=

验

算

3. 递等式计算。

4.8×0.4÷9.6                                       7.2×4+6÷8

8.1÷(5.4×9+5.4)                                    1.08÷[(3.3-3)×1.5]