口算 

9×6=____    9×4=____   9×3=____   9×1=____

7×9=____     8×9=____     4×9=____     8×4=____

①不积跬步，无以至千里；不积小流，无以成江海  ②聚沙成塔，集腋成裘

③艰苦创业，争创一流 ④把握现在，开创未来

2.1÷0.7=____     9×0.03=____    12.4÷0.4=____     2.8÷0.2=____

0.4÷8=____        1.25×8=____     0.54÷6=____      7.2÷0.6=____