Question

123*102_246怎么简算出来

Answer 1

 

追答

简算方法

Answer 2

 

Answer 3

123×102-246
=123×102-123×2
=123×（102-2）
=123×100
=12300

Answer 4

123x102-246
=123x102-123ⅹ2
=(102-2)x123
=100x123
=12300

Answer 5

＝123×102－123×2