47x510-470,怎样简便计算?

2024-11-16 04:54:53
推荐回答(5个)
回答(1):

简便计算
47x510-470
=470x51-470
=470×(51-1)
=470×50
=23500

回答(2):

原式=470*(51-1)
=470*50
=400*50+70*50
=20000+3500
=23500

回答(3):

47ⅹ510-470
=470ⅹ51-470
=470x(51-1)
=470x50
=23500

回答(4):

=47*10*51-470
=470*51-470
=470*(51-1)

我好闲啊

回答(5):

47x510-470
=470x51-470
=470×(51-1)
=470×50
=23500