下面各题怎样计算简便就怎样计算...

492×5×2                            50×26×4

50×4×2×25                         35×8×125×20

【答案】4920 ，5200，10000 ，700000   

【解析】

492×5×2                                                                                      

=492×10

=4920                               

50×26×4

=50×4×26

=200×26

=5200

50×4×2×25                       

=（50×2）×（4×25）                

=100×100                            

=10000                              

35×8×125×20

=（35×20）×（8×125）

=700×1000

=700000