豎式計(jì)算

5.555×5.2            2.22×3.33             7.658×85       

36.02×0.3            56.78×83               5.6×2.9      

4.67×2.44             1.666×6.1            9.432×0.002        

5.6×6.5                4.88×2.9             5.61×4.3       

8.9×2.4                 5.5×55                 9.77×0.02

1.384×5.1               4.268×1.3               1.5×4.9

7.658×85                5.3×6.3              9.9×1.4

2、脫式計(jì)算（能簡(jiǎn)算的要簡(jiǎn)算）

2.5×7.1×4           16.12×99＋16.12           5.2×0.9＋0.9

7.28×99+7.28         4.3×50×0.2           26×15.7＋15.7×24      

4.4×0.8－3.4×0.8    (1.25－0.125)×8 4.8×100.1      

56.5×99       7.09×10.8－0.8×7.09    8.7 × 17.4 - 8.7 × 7.4     

12.5×0.4×2.5×8 9.5×101    6.81+6.81×99         

0.25×185×40         6.81×9.9          19.5×10.1

2.5×56          12.5×48               2.5×8.08