| 竖式计算:(带△要要验算) 152×23=________; | 28×304=________; | △360×70=________; | 576÷18=________; |
| 189÷21=________; | △960÷32=________; | 55×42=________; | 740×80=________; |
| 805×24=________; | 950×12=________. |
分析:根据整数乘法和除法的计算法则计算解答.
解答:152×23=3496;

28×304=8512;

△360×70=25200;

验算:

576÷18=32;

189÷21=9;
△960÷32=30;

验算:

55×42=2310;
740×80=59200;
805×24=19320;

950×12=11400;
.点评:本题主要考查整数乘法和除法的计算方法.